/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=WIDEST --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/Problem10_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:21:38,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:21:38,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:21:39,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:21:39,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:21:39,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:21:39,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:21:39,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:21:39,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:21:39,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:21:39,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:21:39,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:21:39,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:21:39,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:21:39,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:21:39,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:21:39,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:21:39,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:21:39,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:21:39,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:21:39,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:21:39,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:21:39,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:21:39,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:21:39,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:21:39,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:21:39,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:21:39,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:21:39,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:21:39,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:21:39,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:21:39,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:21:39,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:21:39,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:21:39,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:21:39,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:21:39,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:21:39,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:21:39,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:21:39,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:21:39,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:21:39,095 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 03:21:39,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:21:39,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:21:39,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:21:39,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:21:39,123 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:21:39,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:21:39,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:21:39,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:21:39,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:21:39,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:21:39,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:21:39,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:21:39,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:21:39,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:21:39,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:21:39,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:21:39,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:21:39,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:21:39,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:21:39,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:21:39,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:21:39,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:21:39,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:21:39,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:21:39,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:21:39,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:21:39,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:21:39,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:21:39,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:21:39,128 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:21:39,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:21:39,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:21:39,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:21:39,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:21:39,653 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:21:39,654 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 03:21:39,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41c720804/47d273c5e6d3454cbc4b56a28ffb7d3a/FLAG1ef6e5522 [2020-09-25 03:21:40,402 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:21:40,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 03:21:40,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41c720804/47d273c5e6d3454cbc4b56a28ffb7d3a/FLAG1ef6e5522 [2020-09-25 03:21:40,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41c720804/47d273c5e6d3454cbc4b56a28ffb7d3a [2020-09-25 03:21:40,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:21:40,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:21:40,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:21:40,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:21:40,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:21:40,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:21:40" (1/1) ... [2020-09-25 03:21:40,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:40, skipping insertion in model container [2020-09-25 03:21:40,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:21:40" (1/1) ... [2020-09-25 03:21:40,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:21:40,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:21:41,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:21:41,250 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:21:41,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:21:41,531 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:21:41,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:41 WrapperNode [2020-09-25 03:21:41,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:21:41,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:21:41,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:21:41,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:21:41,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:41" (1/1) ... [2020-09-25 03:21:41,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:41" (1/1) ... [2020-09-25 03:21:41,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:41" (1/1) ... [2020-09-25 03:21:41,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:41" (1/1) ... [2020-09-25 03:21:41,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:41" (1/1) ... [2020-09-25 03:21:41,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:41" (1/1) ... [2020-09-25 03:21:41,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:41" (1/1) ... [2020-09-25 03:21:41,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:21:41,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:21:41,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:21:41,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:21:41,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:41" (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 03:21:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:21:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:21:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 03:21:41,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:21:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 03:21:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:21:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:21:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:21:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:21:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:21:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:21:43,150 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:21:43,151 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:21:43,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:21:43 BoogieIcfgContainer [2020-09-25 03:21:43,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:21:43,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:21:43,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:21:43,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:21:43,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:21:40" (1/3) ... [2020-09-25 03:21:43,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:21:43, skipping insertion in model container [2020-09-25 03:21:43,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:21:41" (2/3) ... [2020-09-25 03:21:43,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:21:43, skipping insertion in model container [2020-09-25 03:21:43,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:21:43" (3/3) ... [2020-09-25 03:21:43,170 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 03:21:43,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:21:43,193 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:21:43,215 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:21:43,250 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:21:43,250 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:21:43,251 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:21:43,251 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:21:43,251 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:21:43,251 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:21:43,251 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:21:43,251 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:21:43,284 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 03:21:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:21:43,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:21:43,295 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] [2020-09-25 03:21:43,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:21:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:21:43,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 03:21:43,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:21:43,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914305392] [2020-09-25 03:21:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:21:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:43,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:43,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:43,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:21:43,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-25 03:21:43,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:21:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:21:43,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:21:43,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:21:44,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:21:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:44,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:44,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:44,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:21:44,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:44,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 03:21:44,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:21:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:21:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:21:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:21:44,104 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 03:21:44,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914305392] [2020-09-25 03:21:44,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:21:44,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:21:44,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453921608] [2020-09-25 03:21:44,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:21:44,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:21:44,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:21:44,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:21:44,144 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 03:21:46,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:21:46,223 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 03:21:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:21:46,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 03:21:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:21:46,251 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 03:21:46,251 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 03:21:46,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:21:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 03:21:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 03:21:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 03:21:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 03:21:46,364 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 03:21:46,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:21:46,365 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 03:21:46,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:21:46,365 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 03:21:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 03:21:46,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:21:46,373 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 03:21:46,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:21:46,373 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:21:46,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:21:46,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 03:21:46,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:21:46,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646616549] [2020-09-25 03:21:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:21:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:46,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:46,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:48,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:48,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 03:21:48,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:21:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-09-25 03:21:48,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:21:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:21:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 03:21:48,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:21:48,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:21:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:48,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:48,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:21:48,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:48,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:21:48,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:21:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:21:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:21:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:21:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:21:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:48,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:48,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:21:48,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 03:21:48,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:21:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:21:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 03:21:48,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:21:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:21:48,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646616549] [2020-09-25 03:21:48,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:21:48,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:21:48,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378818204] [2020-09-25 03:21:48,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:21:48,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:21:48,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:21:48,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:21:48,460 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 03:21:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:21:50,555 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-25 03:21:50,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:21:50,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-09-25 03:21:50,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:21:50,562 INFO L225 Difference]: With dead ends: 1258 [2020-09-25 03:21:50,562 INFO L226 Difference]: Without dead ends: 730 [2020-09-25 03:21:50,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:21:50,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-25 03:21:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-25 03:21:50,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 03:21:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-25 03:21:50,603 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 127 [2020-09-25 03:21:50,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:21:50,604 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-25 03:21:50,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:21:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-25 03:21:50,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 03:21:50,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:21:50,608 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 03:21:50,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:21:50,609 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:21:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:21:50,609 INFO L82 PathProgramCache]: Analyzing trace with hash 843318586, now seen corresponding path program 1 times [2020-09-25 03:21:50,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:21:50,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153648088] [2020-09-25 03:21:50,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:21:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:50,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:51,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:54,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:54,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:54,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:55,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:55,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 03:21:55,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:21:55,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:21:55,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:21:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:21:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 03:21:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:21:55,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:21:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:55,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:55,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:55,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:21:55,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:55,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 03:21:55,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:21:55,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:21:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:21:55,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:21:55,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:21:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:56,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:56,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:21:56,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:56,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 03:21:56,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:56,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:21:56,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:21:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 03:21:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:21:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:21:56,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153648088] [2020-09-25 03:21:56,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:21:56,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:21:56,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123120942] [2020-09-25 03:21:56,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:21:56,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:21:56,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:21:56,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:21:56,165 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 8 states. [2020-09-25 03:21:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:21:59,398 INFO L93 Difference]: Finished difference Result 2006 states and 2627 transitions. [2020-09-25 03:21:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:21:59,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-09-25 03:21:59,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:21:59,415 INFO L225 Difference]: With dead ends: 2006 [2020-09-25 03:21:59,416 INFO L226 Difference]: Without dead ends: 1472 [2020-09-25 03:21:59,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:21:59,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-09-25 03:21:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1375. [2020-09-25 03:21:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-09-25 03:21:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1765 transitions. [2020-09-25 03:21:59,511 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1765 transitions. Word has length 136 [2020-09-25 03:21:59,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:21:59,512 INFO L479 AbstractCegarLoop]: Abstraction has 1375 states and 1765 transitions. [2020-09-25 03:21:59,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:21:59,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1765 transitions. [2020-09-25 03:21:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 03:21:59,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:21:59,525 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 03:21:59,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:21:59,526 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:21:59,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:21:59,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1301933938, now seen corresponding path program 1 times [2020-09-25 03:21:59,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:21:59,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501436035] [2020-09-25 03:21:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:21:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:59,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:59,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:00,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:01,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:01,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 03:22:01,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:22:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2109 [2020-09-25 03:22:01,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:22:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:22:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 03:22:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:01,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:22:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:01,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:01,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:22:01,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:01,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:22:01,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:22:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:22:01,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:01,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:22:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:01,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:01,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 03:22:01,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:01,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 03:22:01,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:22:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:22:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 03:22:01,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:22:02,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501436035] [2020-09-25 03:22:02,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:22:02,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:22:02,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841232908] [2020-09-25 03:22:02,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:22:02,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:22:02,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:22:02,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:22:02,053 INFO L87 Difference]: Start difference. First operand 1375 states and 1765 transitions. Second operand 8 states. [2020-09-25 03:22:05,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:22:05,514 INFO L93 Difference]: Finished difference Result 3052 states and 4129 transitions. [2020-09-25 03:22:05,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:22:05,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-09-25 03:22:05,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:22:05,534 INFO L225 Difference]: With dead ends: 3052 [2020-09-25 03:22:05,534 INFO L226 Difference]: Without dead ends: 1842 [2020-09-25 03:22:05,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:22:05,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2020-09-25 03:22:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1713. [2020-09-25 03:22:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1713 states. [2020-09-25 03:22:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2181 transitions. [2020-09-25 03:22:05,627 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2181 transitions. Word has length 138 [2020-09-25 03:22:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:22:05,629 INFO L479 AbstractCegarLoop]: Abstraction has 1713 states and 2181 transitions. [2020-09-25 03:22:05,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:22:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2181 transitions. [2020-09-25 03:22:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 03:22:05,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:22:05,632 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 03:22:05,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:22:05,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:22:05,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:22:05,633 INFO L82 PathProgramCache]: Analyzing trace with hash 342195782, now seen corresponding path program 1 times [2020-09-25 03:22:05,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:22:05,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313918354] [2020-09-25 03:22:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:22:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:05,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:06,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:07,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:09,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:09,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 03:22:09,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:22:09,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3752 [2020-09-25 03:22:09,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:22:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:22:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 03:22:09,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:09,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:22:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:09,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:09,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:22:09,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:09,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 03:22:09,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:22:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:22:09,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:22:09,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:22:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:10,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:10,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 03:22:10,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:22:10,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 03:22:10,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:10,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:22:10,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:22:10,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 03:22:10,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:22:10,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313918354] [2020-09-25 03:22:10,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:22:10,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:22:10,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828237436] [2020-09-25 03:22:10,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:22:10,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:22:10,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:22:10,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:22:10,348 INFO L87 Difference]: Start difference. First operand 1713 states and 2181 transitions. Second operand 12 states. [2020-09-25 03:22:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:22:12,825 INFO L93 Difference]: Finished difference Result 3021 states and 3972 transitions. [2020-09-25 03:22:12,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:22:12,827 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 155 [2020-09-25 03:22:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:22:12,837 INFO L225 Difference]: With dead ends: 3021 [2020-09-25 03:22:12,838 INFO L226 Difference]: Without dead ends: 1781 [2020-09-25 03:22:12,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:22:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2020-09-25 03:22:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1724. [2020-09-25 03:22:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1724 states. [2020-09-25 03:22:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2196 transitions. [2020-09-25 03:22:12,904 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2196 transitions. Word has length 155 [2020-09-25 03:22:12,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:22:12,904 INFO L479 AbstractCegarLoop]: Abstraction has 1724 states and 2196 transitions. [2020-09-25 03:22:12,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:22:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2196 transitions. [2020-09-25 03:22:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 03:22:12,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:22:12,910 INFO L422 BasicCegarLoop]: trace histogram [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, 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 03:22:12,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:22:12,910 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:22:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:22:12,911 INFO L82 PathProgramCache]: Analyzing trace with hash 6444598, now seen corresponding path program 1 times [2020-09-25 03:22:12,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:22:12,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775518302] [2020-09-25 03:22:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:22:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:13,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:13,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:13,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:13,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:16,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:16,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 03:22:16,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:22:16,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3145 [2020-09-25 03:22:16,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:22:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:22:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 03:22:16,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:16,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:22:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:16,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:16,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:16,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:22:16,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:16,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:22:16,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:22:16,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:22:16,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:22:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:16,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:16,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:16,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:16,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 03:22:16,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:22:16,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-09-25 03:22:16,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:22:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 03:22:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:22:16,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775518302] [2020-09-25 03:22:16,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:22:16,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:22:16,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46853652] [2020-09-25 03:22:16,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:22:16,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:22:16,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:22:16,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:22:16,897 INFO L87 Difference]: Start difference. First operand 1724 states and 2196 transitions. Second operand 10 states. [2020-09-25 03:22:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:22:19,590 INFO L93 Difference]: Finished difference Result 3905 states and 5152 transitions. [2020-09-25 03:22:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:22:19,591 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 169 [2020-09-25 03:22:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:22:19,604 INFO L225 Difference]: With dead ends: 3905 [2020-09-25 03:22:19,605 INFO L226 Difference]: Without dead ends: 2656 [2020-09-25 03:22:19,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:22:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2020-09-25 03:22:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2483. [2020-09-25 03:22:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2483 states. [2020-09-25 03:22:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3130 transitions. [2020-09-25 03:22:19,678 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3130 transitions. Word has length 169 [2020-09-25 03:22:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:22:19,679 INFO L479 AbstractCegarLoop]: Abstraction has 2483 states and 3130 transitions. [2020-09-25 03:22:19,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:22:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3130 transitions. [2020-09-25 03:22:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 03:22:19,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:22:19,683 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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 03:22:19,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:22:19,684 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:22:19,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:22:19,684 INFO L82 PathProgramCache]: Analyzing trace with hash 445153118, now seen corresponding path program 1 times [2020-09-25 03:22:19,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:22:19,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498515992] [2020-09-25 03:22:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:22:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:19,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:20,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:20,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:20,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 03:22:20,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:22:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1274 [2020-09-25 03:22:20,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:22:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:22:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 03:22:21,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:21,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:22:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:21,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:21,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:22:21,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:22:21,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:22:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:22:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:22:21,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:21,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:22:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:22:21,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 03:22:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:22:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 03:22:21,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:22:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:22:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:22:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 03:22:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:22:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:22:21,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498515992] [2020-09-25 03:22:21,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:22:21,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:22:21,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340144617] [2020-09-25 03:22:21,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:22:21,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:22:21,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:22:21,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:22:21,434 INFO L87 Difference]: Start difference. First operand 2483 states and 3130 transitions. Second operand 7 states. [2020-09-25 03:22:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:22:23,876 INFO L93 Difference]: Finished difference Result 5298 states and 6971 transitions. [2020-09-25 03:22:23,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:22:23,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-09-25 03:22:23,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:22:23,890 INFO L225 Difference]: With dead ends: 5298 [2020-09-25 03:22:23,890 INFO L226 Difference]: Without dead ends: 2986 [2020-09-25 03:22:23,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:22:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-09-25 03:22:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2784. [2020-09-25 03:22:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2784 states. [2020-09-25 03:22:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 3467 transitions. [2020-09-25 03:22:23,983 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 3467 transitions. Word has length 191 [2020-09-25 03:22:23,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:22:23,983 INFO L479 AbstractCegarLoop]: Abstraction has 2784 states and 3467 transitions. [2020-09-25 03:22:23,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:22:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 3467 transitions. [2020-09-25 03:22:23,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 03:22:23,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:22:23,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2020-09-25 03:22:23,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:22:23,989 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:22:23,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:22:23,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1129947497, now seen corresponding path program 1 times [2020-09-25 03:22:23,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:22:23,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929201688] [2020-09-25 03:22:23,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:22:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:22:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:24,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:25,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:25,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:22:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking...