/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=0.8 --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/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:42,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:42,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:42,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:42,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:42,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:42,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:42,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:42,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:42,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:42,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:42,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:42,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:42,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:42,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:42,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:42,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:42,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:42,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:42,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:42,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:42,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:42,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:42,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:42,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:42,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:42,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:42,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:42,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:42,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:42,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:42,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:42,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:42,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:42,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:42,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:42,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:42,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:42,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:42,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:42,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:42,686 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 07:57:42,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:42,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:42,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:42,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:42,712 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:42,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:42,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:42,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:42,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:42,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:42,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:42,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:42,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:42,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:42,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:42,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:42,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:42,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:42,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:42,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:42,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:42,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:42,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:42,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:42,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:42,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:42,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:42,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:42,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:42,718 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:57:43,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:43,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:43,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:43,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:43,212 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:43,214 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 07:57:43,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7fe6626b4/6ea631f9c4924fd084ec45ed9428bdae/FLAGf5eed84e7 [2020-09-25 07:57:44,082 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:44,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 07:57:44,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7fe6626b4/6ea631f9c4924fd084ec45ed9428bdae/FLAGf5eed84e7 [2020-09-25 07:57:44,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7fe6626b4/6ea631f9c4924fd084ec45ed9428bdae [2020-09-25 07:57:44,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:44,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:44,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:44,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:44,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:44,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:44" (1/1) ... [2020-09-25 07:57:44,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:44, skipping insertion in model container [2020-09-25 07:57:44,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:44" (1/1) ... [2020-09-25 07:57:44,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:44,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:45,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:45,090 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:45,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:45,376 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:45,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45 WrapperNode [2020-09-25 07:57:45,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:45,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:45,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:45,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:45,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (1/1) ... [2020-09-25 07:57:45,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:45,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:45,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:45,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:45,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (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 07:57:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:45,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:48,165 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:48,165 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:48,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:48 BoogieIcfgContainer [2020-09-25 07:57:48,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:48,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:48,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:48,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:48,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:44" (1/3) ... [2020-09-25 07:57:48,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12894f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:48, skipping insertion in model container [2020-09-25 07:57:48,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:45" (2/3) ... [2020-09-25 07:57:48,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12894f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:48, skipping insertion in model container [2020-09-25 07:57:48,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:48" (3/3) ... [2020-09-25 07:57:48,187 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 07:57:48,199 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:48,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:48,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:48,267 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:48,267 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:48,267 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:48,268 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:48,268 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:48,268 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:48,268 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:48,268 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:48,306 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 07:57:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 07:57:48,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:48,317 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] [2020-09-25 07:57:48,318 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:48,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:48,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 07:57:48,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:48,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910420703] [2020-09-25 07:57:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:49,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 07:57:49,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:49,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-09-25 07:57:49,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:49,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:57:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:57:49,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 07:57:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:49,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:49,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:57:49,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:57:49,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:49,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:57:49,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:49,444 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 07:57:49,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910420703] [2020-09-25 07:57:49,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:49,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:57:49,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613669881] [2020-09-25 07:57:49,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:57:49,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:49,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:57:49,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:57:49,476 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 07:57:53,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:53,136 INFO L93 Difference]: Finished difference Result 1935 states and 2532 transitions. [2020-09-25 07:57:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:57:53,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-25 07:57:53,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:53,170 INFO L225 Difference]: With dead ends: 1935 [2020-09-25 07:57:53,170 INFO L226 Difference]: Without dead ends: 1050 [2020-09-25 07:57:53,181 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 07:57:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-25 07:57:53,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 997. [2020-09-25 07:57:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 07:57:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-25 07:57:53,339 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 39 [2020-09-25 07:57:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:53,340 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-25 07:57:53,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:57:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-25 07:57:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 07:57:53,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:53,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:53,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:53,348 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:53,349 INFO L82 PathProgramCache]: Analyzing trace with hash 878303855, now seen corresponding path program 1 times [2020-09-25 07:57:53,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:53,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658315259] [2020-09-25 07:57:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:55,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 07:57:55,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1859 [2020-09-25 07:57:55,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:55,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:57:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 07:57:55,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:55,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:55,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:57:55,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:55,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:57:55,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:55,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:57:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:57:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:55,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:55,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:57:55,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:55,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 07:57:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:55,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:57:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:55,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658315259] [2020-09-25 07:57:55,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:55,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:55,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559850979] [2020-09-25 07:57:55,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:55,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:55,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:55,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:55,814 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 7 states. [2020-09-25 07:58:00,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:00,652 INFO L93 Difference]: Finished difference Result 2632 states and 3210 transitions. [2020-09-25 07:58:00,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:58:00,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-09-25 07:58:00,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:00,670 INFO L225 Difference]: With dead ends: 2632 [2020-09-25 07:58:00,671 INFO L226 Difference]: Without dead ends: 1652 [2020-09-25 07:58:00,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:58:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2020-09-25 07:58:00,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1412. [2020-09-25 07:58:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2020-09-25 07:58:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1694 transitions. [2020-09-25 07:58:00,728 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1694 transitions. Word has length 121 [2020-09-25 07:58:00,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:00,730 INFO L479 AbstractCegarLoop]: Abstraction has 1412 states and 1694 transitions. [2020-09-25 07:58:00,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:00,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1694 transitions. [2020-09-25 07:58:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 07:58:00,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:00,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:00,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:58:00,743 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:00,743 INFO L82 PathProgramCache]: Analyzing trace with hash 2121372736, now seen corresponding path program 1 times [2020-09-25 07:58:00,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:00,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695462002] [2020-09-25 07:58:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 07:58:05,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:58:05,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4244 [2020-09-25 07:58:05,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:58:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 07:58:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:05,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:05,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:58:05,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:58:05,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:58:05,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:58:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:05,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 07:58:05,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:05,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 07:58:05,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:05,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 07:58:05,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:05,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695462002] [2020-09-25 07:58:05,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:05,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:58:05,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908973989] [2020-09-25 07:58:05,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:05,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:05,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:05,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:05,483 INFO L87 Difference]: Start difference. First operand 1412 states and 1694 transitions. Second operand 7 states. [2020-09-25 07:58:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:09,523 INFO L93 Difference]: Finished difference Result 3203 states and 3996 transitions. [2020-09-25 07:58:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:58:09,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-09-25 07:58:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:09,533 INFO L225 Difference]: With dead ends: 3203 [2020-09-25 07:58:09,534 INFO L226 Difference]: Without dead ends: 1808 [2020-09-25 07:58:09,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:58:09,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2020-09-25 07:58:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1772. [2020-09-25 07:58:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1772 states. [2020-09-25 07:58:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2090 transitions. [2020-09-25 07:58:09,590 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2090 transitions. Word has length 125 [2020-09-25 07:58:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:09,591 INFO L479 AbstractCegarLoop]: Abstraction has 1772 states and 2090 transitions. [2020-09-25 07:58:09,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2090 transitions. [2020-09-25 07:58:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 07:58:09,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:09,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:09,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:58:09,594 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:09,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:09,595 INFO L82 PathProgramCache]: Analyzing trace with hash 779885706, now seen corresponding path program 1 times [2020-09-25 07:58:09,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:09,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413645317] [2020-09-25 07:58:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:11,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:14,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:14,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 07:58:14,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:58:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:58:14,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:14,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 07:58:14,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:58:14,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:14,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:14,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:14,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:14,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:58:14,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:58:14,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:14,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:14,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:58:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:14,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:14,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:14,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 07:58:14,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 07:58:14,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:14,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:14,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 07:58:14,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:14,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413645317] [2020-09-25 07:58:14,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:14,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:58:14,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441364105] [2020-09-25 07:58:14,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:58:14,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:14,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:58:14,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:58:14,970 INFO L87 Difference]: Start difference. First operand 1772 states and 2090 transitions. Second operand 5 states. [2020-09-25 07:58:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:18,671 INFO L93 Difference]: Finished difference Result 3742 states and 4461 transitions. [2020-09-25 07:58:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:58:18,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 07:58:18,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:18,692 INFO L225 Difference]: With dead ends: 3742 [2020-09-25 07:58:18,692 INFO L226 Difference]: Without dead ends: 2388 [2020-09-25 07:58:18,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:58:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2020-09-25 07:58:18,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1980. [2020-09-25 07:58:18,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1980 states. [2020-09-25 07:58:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2365 transitions. [2020-09-25 07:58:18,760 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2365 transitions. Word has length 164 [2020-09-25 07:58:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:18,760 INFO L479 AbstractCegarLoop]: Abstraction has 1980 states and 2365 transitions. [2020-09-25 07:58:18,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:58:18,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2365 transitions. [2020-09-25 07:58:18,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 07:58:18,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:18,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:18,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:58:18,764 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:18,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:18,764 INFO L82 PathProgramCache]: Analyzing trace with hash 279477351, now seen corresponding path program 1 times [2020-09-25 07:58:18,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:18,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980973821] [2020-09-25 07:58:18,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:18,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:19,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:20,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:20,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 07:58:20,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:58:20,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1889 [2020-09-25 07:58:20,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:20,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 07:58:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:58:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:20,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:20,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:20,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:20,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:58:20,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:20,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:58:20,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:20,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:20,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 07:58:20,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:58:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:20,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:21,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:21,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 07:58:21,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:21,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 07:58:21,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:21,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:21,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 07:58:21,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:21,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980973821] [2020-09-25 07:58:21,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:21,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:58:21,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899599371] [2020-09-25 07:58:21,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:58:21,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:21,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:58:21,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:58:21,150 INFO L87 Difference]: Start difference. First operand 1980 states and 2365 transitions. Second operand 5 states. [2020-09-25 07:58:27,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:27,093 INFO L93 Difference]: Finished difference Result 4645 states and 5831 transitions. [2020-09-25 07:58:27,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:58:27,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 07:58:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:27,110 INFO L225 Difference]: With dead ends: 4645 [2020-09-25 07:58:27,110 INFO L226 Difference]: Without dead ends: 3083 [2020-09-25 07:58:27,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:58:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2020-09-25 07:58:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 2833. [2020-09-25 07:58:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2020-09-25 07:58:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3517 transitions. [2020-09-25 07:58:27,193 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3517 transitions. Word has length 180 [2020-09-25 07:58:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:27,194 INFO L479 AbstractCegarLoop]: Abstraction has 2833 states and 3517 transitions. [2020-09-25 07:58:27,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:58:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3517 transitions. [2020-09-25 07:58:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 07:58:27,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:27,199 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, 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, 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] [2020-09-25 07:58:27,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:58:27,200 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash 2038122493, now seen corresponding path program 1 times [2020-09-25 07:58:27,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:27,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311551773] [2020-09-25 07:58:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:27,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:27,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:28,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:29,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:29,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 07:58:29,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:58:29,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2405 [2020-09-25 07:58:29,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:29,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:29,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-09-25 07:58:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 07:58:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:58:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:29,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:29,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:29,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:58:29,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:58:29,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:29,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:29,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:58:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:29,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:29,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:29,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 07:58:29,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 07:58:29,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:29,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:29,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 07:58:29,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:58:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 07:58:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:30,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:30,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:30,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:58:30,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 07:58:30,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:30,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:58:30,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:30,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311551773] [2020-09-25 07:58:30,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:30,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:58:30,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123880026] [2020-09-25 07:58:30,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:30,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:30,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:30,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:30,247 INFO L87 Difference]: Start difference. First operand 2833 states and 3517 transitions. Second operand 7 states.