/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:44:42,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:44:42,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:44:42,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:44:42,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:44:42,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:44:42,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:44:42,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:44:42,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:44:42,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:44:42,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:44:42,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:44:42,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:44:42,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:44:42,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:44:42,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:44:42,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:44:42,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:44:42,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:44:42,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:44:42,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:44:42,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:44:42,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:44:42,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:44:42,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:44:42,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:44:42,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:44:42,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:44:42,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:44:42,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:44:42,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:44:42,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:44:42,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:44:42,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:44:42,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:44:42,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:44:42,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:44:42,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:44:42,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:44:42,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:44:42,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:44:42,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:44:42,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:44:42,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:44:42,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:44:42,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:44:42,577 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:44:42,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:44:42,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:44:42,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:44:42,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:44:42,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:44:42,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:44:42,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:44:42,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:44:42,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:44:42,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:44:42,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:44:42,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:44:42,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:44:42,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:44:42,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:44:42,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:44:42,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:42,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:44:42,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:44:42,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:44:42,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:44:42,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:44:42,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:44:42,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:44:42,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:44:43,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:44:43,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:44:43,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:44:43,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:44:43,108 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:44:43,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-25 06:44:43,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeb500dc5/153890d231174694bcf94f1c774ec2ad/FLAG8422f9bf1 [2020-09-25 06:44:43,917 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:44:43,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-25 06:44:43,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeb500dc5/153890d231174694bcf94f1c774ec2ad/FLAG8422f9bf1 [2020-09-25 06:44:44,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeb500dc5/153890d231174694bcf94f1c774ec2ad [2020-09-25 06:44:44,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:44:44,143 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:44:44,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:44,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:44:44,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:44:44,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:44" (1/1) ... [2020-09-25 06:44:44,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654c884d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:44, skipping insertion in model container [2020-09-25 06:44:44,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:44" (1/1) ... [2020-09-25 06:44:44,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:44:44,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:44:44,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:44,818 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:44:44,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:45,010 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:44:45,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:45 WrapperNode [2020-09-25 06:44:45,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:45,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:44:45,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:44:45,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:44:45,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:45" (1/1) ... [2020-09-25 06:44:45,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:45" (1/1) ... [2020-09-25 06:44:45,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:45" (1/1) ... [2020-09-25 06:44:45,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:45" (1/1) ... [2020-09-25 06:44:45,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:45" (1/1) ... [2020-09-25 06:44:45,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:45" (1/1) ... [2020-09-25 06:44:45,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:45" (1/1) ... [2020-09-25 06:44:45,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:44:45,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:44:45,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:44:45,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:44:45,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:44:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:44:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:44:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:44:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:44:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:44:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:44:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:44:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:44:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:44:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:44:46,742 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:44:46,743 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:44:46,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:46 BoogieIcfgContainer [2020-09-25 06:44:46,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:44:46,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:44:46,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:44:46,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:44:46,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:44:44" (1/3) ... [2020-09-25 06:44:46,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2bc885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:46, skipping insertion in model container [2020-09-25 06:44:46,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:45" (2/3) ... [2020-09-25 06:44:46,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2bc885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:46, skipping insertion in model container [2020-09-25 06:44:46,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:46" (3/3) ... [2020-09-25 06:44:46,765 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label25.c [2020-09-25 06:44:46,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:44:46,792 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:44:46,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:44:46,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:44:46,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:44:46,861 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:44:46,861 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:44:46,861 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:44:46,862 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:44:46,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:44:46,862 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:44:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:44:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 06:44:46,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:46,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:46,925 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:46,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1730766665, now seen corresponding path program 1 times [2020-09-25 06:44:46,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:46,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779066541] [2020-09-25 06:44:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:47,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:47,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:48,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:52,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:52,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:52,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 06:44:52,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:44:52,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 06:44:52,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:52,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:44:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 06:44:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:44:52,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:52,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:52,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:52,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:52,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:44:52,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:52,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:44:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:52,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779066541] [2020-09-25 06:44:52,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:44:52,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:44:52,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349251937] [2020-09-25 06:44:52,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:44:52,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:52,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:44:52,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:44:52,757 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:44:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:55,136 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 06:44:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:44:55,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 06:44:55,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:55,170 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 06:44:55,171 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 06:44:55,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 06:44:55,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 06:44:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 06:44:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 06:44:55,300 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 160 [2020-09-25 06:44:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:55,302 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 06:44:55,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:44:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 06:44:55,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 06:44:55,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:55,310 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:55,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:44:55,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:55,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:55,311 INFO L82 PathProgramCache]: Analyzing trace with hash -859680355, now seen corresponding path program 1 times [2020-09-25 06:44:55,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:55,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278249754] [2020-09-25 06:44:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:00,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 06:45:00,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:00,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5142 [2020-09-25 06:45:00,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:00,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:45:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 06:45:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-25 06:45:00,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:45:00,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:00,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:00,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:00,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:00,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:45:00,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:00,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 06:45:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:00,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:45:00,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:45:00,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:45:00,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:00,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:00,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:00,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:45:00,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 06:45:00,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278249754] [2020-09-25 06:45:00,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:00,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:45:00,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656322777] [2020-09-25 06:45:00,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:45:00,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:00,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:45:00,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:00,866 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 6 states. [2020-09-25 06:45:03,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:03,416 INFO L93 Difference]: Finished difference Result 1775 states and 2318 transitions. [2020-09-25 06:45:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:45:03,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-09-25 06:45:03,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:03,428 INFO L225 Difference]: With dead ends: 1775 [2020-09-25 06:45:03,429 INFO L226 Difference]: Without dead ends: 1132 [2020-09-25 06:45:03,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:45:03,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2020-09-25 06:45:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1120. [2020-09-25 06:45:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1120 states. [2020-09-25 06:45:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1466 transitions. [2020-09-25 06:45:03,488 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1466 transitions. Word has length 178 [2020-09-25 06:45:03,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:03,489 INFO L479 AbstractCegarLoop]: Abstraction has 1120 states and 1466 transitions. [2020-09-25 06:45:03,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:45:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1466 transitions. [2020-09-25 06:45:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 06:45:03,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:03,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:03,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:45:03,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:03,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:03,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1129646447, now seen corresponding path program 1 times [2020-09-25 06:45:03,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:03,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254688181] [2020-09-25 06:45:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:03,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:04,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:04,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:08,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 06:45:08,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 06:45:08,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:08,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:08,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 06:45:08,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 06:45:08,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:45:08,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:08,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:08,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:45:08,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:08,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:08,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:08,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:08,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:45:08,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:08,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:45:08,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:08,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:45:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:45:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:08,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254688181] [2020-09-25 06:45:08,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:08,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:08,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806375635] [2020-09-25 06:45:08,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:08,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:08,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:08,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:08,884 INFO L87 Difference]: Start difference. First operand 1120 states and 1466 transitions. Second operand 5 states. [2020-09-25 06:45:11,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:11,046 INFO L93 Difference]: Finished difference Result 2834 states and 3829 transitions. [2020-09-25 06:45:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:11,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 06:45:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:11,055 INFO L225 Difference]: With dead ends: 2834 [2020-09-25 06:45:11,055 INFO L226 Difference]: Without dead ends: 1359 [2020-09-25 06:45:11,061 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 06:45:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2020-09-25 06:45:11,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1196. [2020-09-25 06:45:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-25 06:45:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1450 transitions. [2020-09-25 06:45:11,102 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1450 transitions. Word has length 198 [2020-09-25 06:45:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:11,103 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1450 transitions. [2020-09-25 06:45:11,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1450 transitions. [2020-09-25 06:45:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 06:45:11,109 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:11,110 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:11,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:45:11,110 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:11,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:11,111 INFO L82 PathProgramCache]: Analyzing trace with hash 380278058, now seen corresponding path program 1 times [2020-09-25 06:45:11,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:11,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227699505] [2020-09-25 06:45:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:11,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:14,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:14,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:16,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 06:45:16,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:45:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:45:16,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:16,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:45:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:45:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:16,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:16,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:16,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:16,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:16,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:45:16,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:16,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:45:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:16,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:16,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:45:16,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:45:16,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:16,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:16,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:16,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:16,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:45:16,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:16,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:45:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:16,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:16,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:16,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:45:16,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:16,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:16,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:45:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:45:16,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227699505] [2020-09-25 06:45:16,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:16,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:45:16,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531185063] [2020-09-25 06:45:16,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:16,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:16,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:16,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:16,468 INFO L87 Difference]: Start difference. First operand 1196 states and 1450 transitions. Second operand 7 states. [2020-09-25 06:45:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:18,304 INFO L93 Difference]: Finished difference Result 3154 states and 3930 transitions. [2020-09-25 06:45:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:45:18,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-09-25 06:45:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:18,319 INFO L225 Difference]: With dead ends: 3154 [2020-09-25 06:45:18,319 INFO L226 Difference]: Without dead ends: 1980 [2020-09-25 06:45:18,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:45:18,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-09-25 06:45:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1664. [2020-09-25 06:45:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-25 06:45:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2030 transitions. [2020-09-25 06:45:18,384 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2030 transitions. Word has length 224 [2020-09-25 06:45:18,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:18,384 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2030 transitions. [2020-09-25 06:45:18,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:18,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2030 transitions. [2020-09-25 06:45:18,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 06:45:18,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:18,395 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:18,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:45:18,396 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:18,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1371325380, now seen corresponding path program 1 times [2020-09-25 06:45:18,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:18,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522820759] [2020-09-25 06:45:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:18,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:23,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 06:45:23,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:45:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:45:23,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:23,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:45:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 06:45:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:45:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:23,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:23,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:45:23,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:23,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:23,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:23,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:23,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:45:23,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:23,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:23,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 06:45:23,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 06:45:23,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:23,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 06:45:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:23,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 06:45:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:23,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:23,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:45:23,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:45:23,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:23,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:45:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:23,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:45:23,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522820759] [2020-09-25 06:45:23,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:23,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:45:23,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004165651] [2020-09-25 06:45:23,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:23,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:23,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:23,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:23,886 INFO L87 Difference]: Start difference. First operand 1664 states and 2030 transitions. Second operand 7 states. [2020-09-25 06:45:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:26,158 INFO L93 Difference]: Finished difference Result 4134 states and 5133 transitions. [2020-09-25 06:45:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:45:26,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-09-25 06:45:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:26,172 INFO L225 Difference]: With dead ends: 4134 [2020-09-25 06:45:26,172 INFO L226 Difference]: Without dead ends: 2492 [2020-09-25 06:45:26,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:45:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2020-09-25 06:45:26,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2437. [2020-09-25 06:45:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-09-25 06:45:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 2877 transitions. [2020-09-25 06:45:26,249 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 2877 transitions. Word has length 232 [2020-09-25 06:45:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:26,249 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 2877 transitions. [2020-09-25 06:45:26,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:26,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 2877 transitions. [2020-09-25 06:45:26,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 06:45:26,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:26,260 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:26,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:45:26,261 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:26,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1765686849, now seen corresponding path program 1 times [2020-09-25 06:45:26,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:26,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947497881] [2020-09-25 06:45:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:26,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:26,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:29,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:29,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:29,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking...