/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:39,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:39,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:39,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:39,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:39,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:39,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:39,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:39,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:39,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:39,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:39,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:39,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:39,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:39,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:39,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:39,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:39,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:39,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:39,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:39,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:39,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:39,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:39,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:39,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:39,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:39,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:39,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:39,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:39,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:39,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:39,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:39,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:39,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:39,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:39,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:39,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:39,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:39,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:39,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:39,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:39,245 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 12:27:39,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:39,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:39,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:39,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:39,298 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:39,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:39,298 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:39,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:39,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:39,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:39,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:39,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:39,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:39,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:39,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:39,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:39,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:39,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:39,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:39,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:39,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:39,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:39,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:39,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:39,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:39,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:39,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:39,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:39,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:39,304 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:27:39,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:39,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:39,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:39,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:39,792 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:39,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 12:27:39,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c7dc9d8d/e93cd41ad1b343538d1be4b9df2b1ffb/FLAG5a45dae92 [2020-09-25 12:27:40,545 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:40,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 12:27:40,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c7dc9d8d/e93cd41ad1b343538d1be4b9df2b1ffb/FLAG5a45dae92 [2020-09-25 12:27:40,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c7dc9d8d/e93cd41ad1b343538d1be4b9df2b1ffb [2020-09-25 12:27:40,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:40,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:40,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:40,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:40,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:40,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:40" (1/1) ... [2020-09-25 12:27:40,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:40, skipping insertion in model container [2020-09-25 12:27:40,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:40" (1/1) ... [2020-09-25 12:27:40,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:40,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:41,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:41,531 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:41,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:41,667 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:41,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41 WrapperNode [2020-09-25 12:27:41,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:41,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:41,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:41,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:41,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:41,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:41,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:41,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:41,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:43,527 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:43,528 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:43,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:43 BoogieIcfgContainer [2020-09-25 12:27:43,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:43,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:43,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:43,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:43,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:40" (1/3) ... [2020-09-25 12:27:43,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:43, skipping insertion in model container [2020-09-25 12:27:43,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (2/3) ... [2020-09-25 12:27:43,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:43, skipping insertion in model container [2020-09-25 12:27:43,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:43" (3/3) ... [2020-09-25 12:27:43,550 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-09-25 12:27:43,565 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:43,578 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:43,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:43,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:43,641 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:43,642 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:43,642 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:43,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:43,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:43,642 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:43,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:43,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 12:27:43,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:43,690 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] [2020-09-25 12:27:43,691 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:43,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:43,700 INFO L82 PathProgramCache]: Analyzing trace with hash -193504545, now seen corresponding path program 1 times [2020-09-25 12:27:43,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:43,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 12:27:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:44,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:45,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:45,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 12:27:45,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1497 [2020-09-25 12:27:45,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:45,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:45,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:45,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 12:27:45,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 12:27:45,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:45,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:45,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:45,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:45,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:27:45,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:45,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:45,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:27:45,718 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 12:27:45,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 12:27:45,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:45,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:27:45,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905807043] [2020-09-25 12:27:45,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:45,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:45,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:45,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:45,768 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 12:27:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:48,448 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 12:27:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:27:48,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-09-25 12:27:48,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:48,478 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 12:27:48,478 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 12:27:48,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 12:27:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 12:27:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 12:27:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 12:27:48,611 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 61 [2020-09-25 12:27:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:48,612 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 12:27:48,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:48,613 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 12:27:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 12:27:48,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:48,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:48,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:48,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:48,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:48,624 INFO L82 PathProgramCache]: Analyzing trace with hash 75508103, now seen corresponding path program 1 times [2020-09-25 12:27:48,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:48,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880409717] [2020-09-25 12:27:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:53,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 12:27:53,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:27:53,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:27:53,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:53,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:53,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:27:53,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:53,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:53,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:27:53,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:53,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:53,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:53,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:54,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 12:27:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:54,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:27:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:54,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880409717] [2020-09-25 12:27:54,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:54,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:54,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831792060] [2020-09-25 12:27:54,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:54,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:54,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:54,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:54,139 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 12:27:56,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:56,348 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-25 12:27:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:27:56,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-25 12:27:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:56,355 INFO L225 Difference]: With dead ends: 1574 [2020-09-25 12:27:56,356 INFO L226 Difference]: Without dead ends: 894 [2020-09-25 12:27:56,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-25 12:27:56,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-25 12:27:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-25 12:27:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-25 12:27:56,404 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 144 [2020-09-25 12:27:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:56,405 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-25 12:27:56,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-25 12:27:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 12:27:56,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:56,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:56,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:56,413 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:56,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:56,414 INFO L82 PathProgramCache]: Analyzing trace with hash 118153746, now seen corresponding path program 1 times [2020-09-25 12:27:56,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:56,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31482800] [2020-09-25 12:27:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:58,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:01,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:01,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 12:28:01,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:01,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4558 [2020-09-25 12:28:01,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:01,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:01,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:01,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:28:01,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 12:28:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:01,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:01,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:01,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:28:01,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:01,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:28:01,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:01,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:01,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:01,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:01,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:01,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 12:28:01,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:01,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:01,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:01,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31482800] [2020-09-25 12:28:01,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:01,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:01,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173518895] [2020-09-25 12:28:01,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:01,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:01,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:01,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:01,427 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 8 states. [2020-09-25 12:28:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:04,826 INFO L93 Difference]: Finished difference Result 1971 states and 2691 transitions. [2020-09-25 12:28:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:04,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2020-09-25 12:28:04,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:04,840 INFO L225 Difference]: With dead ends: 1971 [2020-09-25 12:28:04,840 INFO L226 Difference]: Without dead ends: 1285 [2020-09-25 12:28:04,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:04,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2020-09-25 12:28:04,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1046. [2020-09-25 12:28:04,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 12:28:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1363 transitions. [2020-09-25 12:28:04,892 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1363 transitions. Word has length 150 [2020-09-25 12:28:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:04,892 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1363 transitions. [2020-09-25 12:28:04,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:04,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1363 transitions. [2020-09-25 12:28:04,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 12:28:04,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:04,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:04,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:04,898 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:04,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:04,898 INFO L82 PathProgramCache]: Analyzing trace with hash -403760050, now seen corresponding path program 1 times [2020-09-25 12:28:04,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:04,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550182630] [2020-09-25 12:28:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:04,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:09,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 12:28:09,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:28:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 12:28:09,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:09,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 12:28:09,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:28:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:28:10,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 12:28:10,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 12:28:10,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 12:28:10,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:10,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550182630] [2020-09-25 12:28:10,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:10,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:28:10,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465326309] [2020-09-25 12:28:10,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:10,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:10,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:10,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:10,552 INFO L87 Difference]: Start difference. First operand 1046 states and 1363 transitions. Second operand 8 states. [2020-09-25 12:28:13,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:13,244 INFO L93 Difference]: Finished difference Result 3175 states and 4457 transitions. [2020-09-25 12:28:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:13,245 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-09-25 12:28:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:13,260 INFO L225 Difference]: With dead ends: 3175 [2020-09-25 12:28:13,260 INFO L226 Difference]: Without dead ends: 2144 [2020-09-25 12:28:13,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-09-25 12:28:13,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1658. [2020-09-25 12:28:13,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-09-25 12:28:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2189 transitions. [2020-09-25 12:28:13,342 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2189 transitions. Word has length 183 [2020-09-25 12:28:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:13,344 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2189 transitions. [2020-09-25 12:28:13,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2189 transitions. [2020-09-25 12:28:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 12:28:13,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:13,350 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, 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] [2020-09-25 12:28:13,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:13,351 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:13,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:13,352 INFO L82 PathProgramCache]: Analyzing trace with hash -967098922, now seen corresponding path program 1 times [2020-09-25 12:28:13,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:13,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156033672] [2020-09-25 12:28:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:13,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:18,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 12:28:18,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:18,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:28:18,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:18,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 12:28:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:18,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:18,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:18,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:18,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:28:18,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:18,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:18,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:18,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:18,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:18,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:18,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 12:28:18,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:18,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:28:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:18,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:28:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:18,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:19,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:19,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:28:19,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-25 12:28:19,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:19,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:19,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:28:19,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 12:28:19,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156033672] [2020-09-25 12:28:19,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:19,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:28:19,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123419644] [2020-09-25 12:28:19,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:28:19,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:19,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:28:19,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:28:19,482 INFO L87 Difference]: Start difference. First operand 1658 states and 2189 transitions. Second operand 9 states. [2020-09-25 12:28:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:22,660 INFO L93 Difference]: Finished difference Result 3639 states and 5103 transitions. [2020-09-25 12:28:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:28:22,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 223 [2020-09-25 12:28:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:22,673 INFO L225 Difference]: With dead ends: 3639 [2020-09-25 12:28:22,674 INFO L226 Difference]: Without dead ends: 2458 [2020-09-25 12:28:22,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:28:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2020-09-25 12:28:22,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2423. [2020-09-25 12:28:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-09-25 12:28:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3134 transitions. [2020-09-25 12:28:22,754 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3134 transitions. Word has length 223 [2020-09-25 12:28:22,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:22,754 INFO L479 AbstractCegarLoop]: Abstraction has 2423 states and 3134 transitions. [2020-09-25 12:28:22,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:28:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3134 transitions. [2020-09-25 12:28:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 12:28:22,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:22,760 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:22,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:22,761 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:22,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:22,761 INFO L82 PathProgramCache]: Analyzing trace with hash 139673377, now seen corresponding path program 1 times [2020-09-25 12:28:22,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:22,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994562630] [2020-09-25 12:28:22,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking...