/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:37,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:37,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:37,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:37,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:37,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:37,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:37,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:37,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:37,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:37,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:37,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:37,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:37,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:37,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:37,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:37,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:37,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:37,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:37,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:37,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:37,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:37,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:37,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:37,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:37,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:37,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:37,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:37,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:37,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:37,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:37,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:37,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:37,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:37,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:37,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:37,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:37,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:37,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:37,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:37,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:37,320 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 14:43:37,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:37,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:37,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:37,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:37,361 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:37,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:37,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:37,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:37,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:37,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:37,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:37,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:37,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:37,363 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:37,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:37,363 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:37,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:37,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:37,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:37,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:37,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:37,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:37,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:37,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:37,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:37,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:37,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:37,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:37,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:37,366 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:43:37,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:37,862 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:37,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:37,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:37,871 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:37,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 14:43:37,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4c5edbff/d1b3edd0aa5d4ce6b2a05e902a7b641b/FLAG63405f79c [2020-09-25 14:43:38,669 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:38,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 14:43:38,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4c5edbff/d1b3edd0aa5d4ce6b2a05e902a7b641b/FLAG63405f79c [2020-09-25 14:43:38,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4c5edbff/d1b3edd0aa5d4ce6b2a05e902a7b641b [2020-09-25 14:43:38,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:38,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:38,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:38,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:38,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:38,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:38" (1/1) ... [2020-09-25 14:43:38,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:38, skipping insertion in model container [2020-09-25 14:43:38,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:38" (1/1) ... [2020-09-25 14:43:38,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:38,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:39,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:39,473 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:39,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:39,828 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:39,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:39 WrapperNode [2020-09-25 14:43:39,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:39,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:39,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:39,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:39,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:39" (1/1) ... [2020-09-25 14:43:39,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:39" (1/1) ... [2020-09-25 14:43:39,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:39" (1/1) ... [2020-09-25 14:43:39,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:39" (1/1) ... [2020-09-25 14:43:39,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:39" (1/1) ... [2020-09-25 14:43:39,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:39" (1/1) ... [2020-09-25 14:43:39,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:39" (1/1) ... [2020-09-25 14:43:39,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:39,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:39,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:39,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:39,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:39" (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 14:43:40,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:40,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:40,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:40,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:41,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:41,789 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:41,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:41 BoogieIcfgContainer [2020-09-25 14:43:41,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:41,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:41,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:41,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:41,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:38" (1/3) ... [2020-09-25 14:43:41,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bfa67d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:41, skipping insertion in model container [2020-09-25 14:43:41,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:39" (2/3) ... [2020-09-25 14:43:41,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bfa67d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:41, skipping insertion in model container [2020-09-25 14:43:41,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:41" (3/3) ... [2020-09-25 14:43:41,812 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-25 14:43:41,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:41,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:41,859 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:41,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:41,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:41,904 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:41,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:41,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:41,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:41,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:41,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 14:43:41,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 14:43:41,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:41,975 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] [2020-09-25 14:43:41,976 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:41,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:41,985 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-25 14:43:41,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:41,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312598402] [2020-09-25 14:43:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:42,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:42,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:43:42,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:43:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-25 14:43:42,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:42,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 14:43:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:43:43,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:43,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:43,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:43,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:43,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:43:43,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:43,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:43,127 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 14:43:43,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312598402] [2020-09-25 14:43:43,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:43,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:43:43,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921135657] [2020-09-25 14:43:43,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:43:43,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:43,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:43:43,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:43:43,160 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 14:43:45,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:45,939 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 14:43:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:43:45,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 14:43:45,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:45,972 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 14:43:45,972 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 14:43:45,984 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 14:43:46,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 14:43:46,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 14:43:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 14:43:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 14:43:46,121 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 67 [2020-09-25 14:43:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:46,122 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 14:43:46,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:43:46,122 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 14:43:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 14:43:46,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:46,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:46,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:46,132 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:46,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:46,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1248724664, now seen corresponding path program 1 times [2020-09-25 14:43:46,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:46,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863064227] [2020-09-25 14:43:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 14:43:51,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:51,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 14:43:51,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 14:43:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:51,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:51,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:43:51,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:51,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:51,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 14:43:51,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:51,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:51,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863064227] [2020-09-25 14:43:51,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:51,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:51,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316750198] [2020-09-25 14:43:51,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:51,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:51,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:51,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:51,726 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 7 states. [2020-09-25 14:43:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:55,538 INFO L93 Difference]: Finished difference Result 2215 states and 2835 transitions. [2020-09-25 14:43:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:55,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-25 14:43:55,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:55,552 INFO L225 Difference]: With dead ends: 2215 [2020-09-25 14:43:55,553 INFO L226 Difference]: Without dead ends: 1424 [2020-09-25 14:43:55,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 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 14:43:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-09-25 14:43:55,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1301. [2020-09-25 14:43:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-09-25 14:43:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1559 transitions. [2020-09-25 14:43:55,656 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1559 transitions. Word has length 146 [2020-09-25 14:43:55,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:55,658 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1559 transitions. [2020-09-25 14:43:55,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1559 transitions. [2020-09-25 14:43:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 14:43:55,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:55,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:55,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:55,675 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:55,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1169132927, now seen corresponding path program 1 times [2020-09-25 14:43:55,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:55,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188133392] [2020-09-25 14:43:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:57,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:57,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:59,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 14:43:59,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-09-25 14:43:59,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:59,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 14:43:59,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:59,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:59,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:59,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:59,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:43:59,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:59,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:59,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:43:59,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:00,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:00,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:44:00,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 14:44:00,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:00,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:44:00,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:44:00,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188133392] [2020-09-25 14:44:00,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:44:00,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:44:00,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688038566] [2020-09-25 14:44:00,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:44:00,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:00,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:44:00,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:44:00,175 INFO L87 Difference]: Start difference. First operand 1301 states and 1559 transitions. Second operand 7 states. [2020-09-25 14:44:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:03,478 INFO L93 Difference]: Finished difference Result 3313 states and 4097 transitions. [2020-09-25 14:44:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:44:03,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-09-25 14:44:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:03,492 INFO L225 Difference]: With dead ends: 3313 [2020-09-25 14:44:03,493 INFO L226 Difference]: Without dead ends: 2027 [2020-09-25 14:44:03,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:44:03,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-09-25 14:44:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1977. [2020-09-25 14:44:03,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1977 states. [2020-09-25 14:44:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2315 transitions. [2020-09-25 14:44:03,566 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2315 transitions. Word has length 149 [2020-09-25 14:44:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:03,567 INFO L479 AbstractCegarLoop]: Abstraction has 1977 states and 2315 transitions. [2020-09-25 14:44:03,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:44:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2315 transitions. [2020-09-25 14:44:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 14:44:03,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:03,572 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 14:44:03,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:44:03,573 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:03,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:03,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1277460696, now seen corresponding path program 1 times [2020-09-25 14:44:03,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:03,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286648598] [2020-09-25 14:44:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:03,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:03,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:04,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:05,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:07,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:07,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:08,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:08,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 14:44:08,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:44:08,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 14:44:08,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:08,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 14:44:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 14:44:08,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:08,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:08,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:08,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:08,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:08,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:08,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:44:08,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:08,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:08,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:08,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:08,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:44:08,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:08,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 14:44:08,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:08,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 14:44:08,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:44:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 14:44:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:09,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 14:44:09,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 14:44:09,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:09,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:44:09,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:44:09,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286648598] [2020-09-25 14:44:09,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:44:09,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:44:09,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165982161] [2020-09-25 14:44:09,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:44:09,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:09,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:44:09,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:44:09,589 INFO L87 Difference]: Start difference. First operand 1977 states and 2315 transitions. Second operand 7 states. [2020-09-25 14:44:13,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:13,413 INFO L93 Difference]: Finished difference Result 4453 states and 5410 transitions. [2020-09-25 14:44:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:44:13,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-09-25 14:44:13,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:13,429 INFO L225 Difference]: With dead ends: 4453 [2020-09-25 14:44:13,429 INFO L226 Difference]: Without dead ends: 2680 [2020-09-25 14:44:13,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:44:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2020-09-25 14:44:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2632. [2020-09-25 14:44:13,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2632 states. [2020-09-25 14:44:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 3073 transitions. [2020-09-25 14:44:13,511 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 3073 transitions. Word has length 254 [2020-09-25 14:44:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:13,513 INFO L479 AbstractCegarLoop]: Abstraction has 2632 states and 3073 transitions. [2020-09-25 14:44:13,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:44:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 3073 transitions. [2020-09-25 14:44:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-09-25 14:44:13,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:13,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:13,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:44:13,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:13,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1446145993, now seen corresponding path program 1 times [2020-09-25 14:44:13,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:13,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505278578] [2020-09-25 14:44:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:13,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:14,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:15,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:17,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:18,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:18,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-09-25 14:44:18,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:44:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 14:44:18,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:18,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-25 14:44:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 14:44:18,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:44:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:18,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:18,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:18,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:18,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:18,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:44:18,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:18,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:18,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:18,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:44:18,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:18,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 14:44:18,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:18,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:18,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:44:18,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:18,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 14:44:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:18,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:19,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:19,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:44:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 14:44:19,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:19,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 14:44:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:44:19,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505278578] [2020-09-25 14:44:19,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:44:19,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:44:19,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550344232] [2020-09-25 14:44:19,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:44:19,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:19,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:44:19,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:44:19,605 INFO L87 Difference]: Start difference. First operand 2632 states and 3073 transitions. Second operand 7 states. [2020-09-25 14:44:23,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:23,200 INFO L93 Difference]: Finished difference Result 5638 states and 6778 transitions. [2020-09-25 14:44:23,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:44:23,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-09-25 14:44:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:23,215 INFO L225 Difference]: With dead ends: 5638 [2020-09-25 14:44:23,215 INFO L226 Difference]: Without dead ends: 2475 [2020-09-25 14:44:23,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 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 14:44:23,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2020-09-25 14:44:23,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2212. [2020-09-25 14:44:23,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2020-09-25 14:44:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2469 transitions. [2020-09-25 14:44:23,277 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2469 transitions. Word has length 309 [2020-09-25 14:44:23,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:23,278 INFO L479 AbstractCegarLoop]: Abstraction has 2212 states and 2469 transitions. [2020-09-25 14:44:23,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:44:23,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2469 transitions. [2020-09-25 14:44:23,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-09-25 14:44:23,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:23,289 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:44:23,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:44:23,289 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:23,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:23,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1378649140, now seen corresponding path program 1 times [2020-09-25 14:44:23,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:23,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93635719] [2020-09-25 14:44:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:25,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking...