/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=0.1 --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/Problem01_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:06:51,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:06:51,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:06:51,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:06:51,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:06:51,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:06:51,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:51,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:51,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:51,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:51,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:51,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:51,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:51,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:51,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:51,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:51,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:51,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:51,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:51,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:51,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:51,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:51,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:51,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:51,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:51,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:51,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:51,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:51,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:51,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:51,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:51,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:51,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:51,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:51,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:51,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:51,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:51,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:51,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:51,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:51,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:51,680 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 10:06:51,731 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:51,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:51,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:51,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:51,734 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:51,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:51,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:51,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:51,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:51,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:51,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:51,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:51,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:51,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:51,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:51,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:51,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:51,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:51,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:51,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:51,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:51,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:51,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:51,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:51,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:51,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:51,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:51,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:51,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:51,740 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:06:52,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:52,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:52,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:52,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:52,214 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:52,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 10:06:52,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bb88416/ff3a176d64c04dc699111b076d4eb011/FLAG6bd3fbb49 [2020-09-25 10:06:52,975 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:52,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 10:06:52,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bb88416/ff3a176d64c04dc699111b076d4eb011/FLAG6bd3fbb49 [2020-09-25 10:06:53,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bb88416/ff3a176d64c04dc699111b076d4eb011 [2020-09-25 10:06:53,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:53,247 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:53,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:53,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:53,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:53,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:53" (1/1) ... [2020-09-25 10:06:53,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d5d771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:53, skipping insertion in model container [2020-09-25 10:06:53,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:53" (1/1) ... [2020-09-25 10:06:53,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:53,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:53,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:53,809 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:54,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:54,061 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:54,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:54 WrapperNode [2020-09-25 10:06:54,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:54,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:54,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:54,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:54,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:54" (1/1) ... [2020-09-25 10:06:54,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:54" (1/1) ... [2020-09-25 10:06:54,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:54" (1/1) ... [2020-09-25 10:06:54,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:54" (1/1) ... [2020-09-25 10:06:54,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:54" (1/1) ... [2020-09-25 10:06:54,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:54" (1/1) ... [2020-09-25 10:06:54,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:54" (1/1) ... [2020-09-25 10:06:54,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:54,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:54,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:54,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:54,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:54" (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 10:06:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:55,650 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:55,651 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:55,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:55 BoogieIcfgContainer [2020-09-25 10:06:55,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:55,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:55,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:55,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:55,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:53" (1/3) ... [2020-09-25 10:06:55,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dbd542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:55, skipping insertion in model container [2020-09-25 10:06:55,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:54" (2/3) ... [2020-09-25 10:06:55,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dbd542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:55, skipping insertion in model container [2020-09-25 10:06:55,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:55" (3/3) ... [2020-09-25 10:06:55,681 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2020-09-25 10:06:55,697 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:55,715 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:55,741 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:55,783 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:55,784 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:55,784 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:55,784 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:55,785 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:55,785 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:55,785 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:55,785 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 10:06:55,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:55,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:55,864 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:55,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:55,872 INFO L82 PathProgramCache]: Analyzing trace with hash -850053121, now seen corresponding path program 1 times [2020-09-25 10:06:55,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:55,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767998602] [2020-09-25 10:06:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:56,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:59,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:01,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:01,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 10:07:01,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:07:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:07:01,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:01,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:07:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 10:07:01,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:07:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:01,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:01,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:01,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 10:07:01,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:01,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:07:01,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:01,466 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 10:07:01,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767998602] [2020-09-25 10:07:01,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:01,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:07:01,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378256676] [2020-09-25 10:07:01,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:07:01,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:01,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:07:01,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:07:01,499 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:07:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:03,555 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 10:07:03,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:07:03,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-09-25 10:07:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:03,589 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 10:07:03,589 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 10:07:03,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:07:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 10:07:03,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 10:07:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 10:07:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 10:07:03,738 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 108 [2020-09-25 10:07:03,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:03,741 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 10:07:03,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:07:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 10:07:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 10:07:03,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:03,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:03,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:07:03,755 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:03,756 INFO L82 PathProgramCache]: Analyzing trace with hash 626429774, now seen corresponding path program 1 times [2020-09-25 10:07:03,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:03,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363975930] [2020-09-25 10:07:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:04,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:04,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 10:07:04,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:04,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-25 10:07:04,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:04,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 10:07:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 10:07:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:04,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:04,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:04,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:04,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:07:04,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:04,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:04,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:04,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:04,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:04,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:04,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:07:04,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:04,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:07:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:04,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363975930] [2020-09-25 10:07:04,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:04,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:07:04,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969237484] [2020-09-25 10:07:04,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:07:04,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:04,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:07:04,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:07:04,424 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 5 states. [2020-09-25 10:07:06,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:06,478 INFO L93 Difference]: Finished difference Result 1499 states and 1830 transitions. [2020-09-25 10:07:06,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:07:06,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 10:07:06,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:06,486 INFO L225 Difference]: With dead ends: 1499 [2020-09-25 10:07:06,487 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 10:07:06,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:07:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 10:07:06,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 891. [2020-09-25 10:07:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 10:07:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1042 transitions. [2020-09-25 10:07:06,531 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1042 transitions. Word has length 129 [2020-09-25 10:07:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:06,531 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1042 transitions. [2020-09-25 10:07:06,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:07:06,532 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1042 transitions. [2020-09-25 10:07:06,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 10:07:06,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:06,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:06,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:07:06,537 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:06,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1590256115, now seen corresponding path program 1 times [2020-09-25 10:07:06,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:06,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830749137] [2020-09-25 10:07:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:08,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:09,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:09,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:11,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:11,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 10:07:11,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 10:07:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-09-25 10:07:11,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:11,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:07:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:07:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 10:07:11,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:12,265 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-09-25 10:07:12,404 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-09-25 10:07:12,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:12,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:12,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:12,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:12,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:07:12,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:12,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:07:12,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:12,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:12,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:13,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:13,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:07:13,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:13,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 10:07:13,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:13,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:07:13,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:13,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:07:13,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:13,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830749137] [2020-09-25 10:07:13,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:13,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 10:07:13,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648414938] [2020-09-25 10:07:13,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 10:07:13,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:13,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 10:07:13,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:07:13,532 INFO L87 Difference]: Start difference. First operand 891 states and 1042 transitions. Second operand 20 states. [2020-09-25 10:07:14,435 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-25 10:07:14,634 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-09-25 10:07:15,142 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2020-09-25 10:07:15,654 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 108 [2020-09-25 10:07:16,098 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 105 [2020-09-25 10:07:16,975 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-09-25 10:07:17,331 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-09-25 10:07:17,893 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2020-09-25 10:07:19,089 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-09-25 10:07:19,727 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2020-09-25 10:07:20,327 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-09-25 10:07:20,645 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-09-25 10:07:20,829 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-09-25 10:07:21,421 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-25 10:07:21,950 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-09-25 10:07:22,511 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-09-25 10:07:22,890 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-09-25 10:07:23,512 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 10:07:24,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:24,285 INFO L93 Difference]: Finished difference Result 2829 states and 3555 transitions. [2020-09-25 10:07:24,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-25 10:07:24,295 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 130 [2020-09-25 10:07:24,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:24,305 INFO L225 Difference]: With dead ends: 2829 [2020-09-25 10:07:24,305 INFO L226 Difference]: Without dead ends: 1775 [2020-09-25 10:07:24,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=727, Invalid=1723, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 10:07:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2020-09-25 10:07:24,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1677. [2020-09-25 10:07:24,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-09-25 10:07:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1948 transitions. [2020-09-25 10:07:24,393 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1948 transitions. Word has length 130 [2020-09-25 10:07:24,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:24,395 INFO L479 AbstractCegarLoop]: Abstraction has 1677 states and 1948 transitions. [2020-09-25 10:07:24,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 10:07:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1948 transitions. [2020-09-25 10:07:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 10:07:24,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:24,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:24,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:24,404 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:24,405 INFO L82 PathProgramCache]: Analyzing trace with hash 660938890, now seen corresponding path program 1 times [2020-09-25 10:07:24,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:24,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147084066] [2020-09-25 10:07:24,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:29,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:29,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 10:07:29,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:07:29,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 10:07:29,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:29,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:07:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:07:29,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 10:07:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:29,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:29,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:29,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:07:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:29,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:29,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:29,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:29,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:29,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:29,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:07:29,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:29,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 10:07:29,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:29,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:07:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:07:29,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147084066] [2020-09-25 10:07:29,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:29,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:07:29,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615257024] [2020-09-25 10:07:29,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:07:29,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:29,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:07:29,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:07:29,951 INFO L87 Difference]: Start difference. First operand 1677 states and 1948 transitions. Second operand 6 states. [2020-09-25 10:07:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:32,139 INFO L93 Difference]: Finished difference Result 3938 states and 4687 transitions. [2020-09-25 10:07:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:07:32,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-09-25 10:07:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:32,154 INFO L225 Difference]: With dead ends: 3938 [2020-09-25 10:07:32,154 INFO L226 Difference]: Without dead ends: 2285 [2020-09-25 10:07:32,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:07:32,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-09-25 10:07:32,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2114. [2020-09-25 10:07:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2020-09-25 10:07:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 2512 transitions. [2020-09-25 10:07:32,236 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 2512 transitions. Word has length 137 [2020-09-25 10:07:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:32,236 INFO L479 AbstractCegarLoop]: Abstraction has 2114 states and 2512 transitions. [2020-09-25 10:07:32,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:07:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 2512 transitions. [2020-09-25 10:07:32,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 10:07:32,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:32,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:32,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:07:32,246 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:32,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:32,246 INFO L82 PathProgramCache]: Analyzing trace with hash -247402504, now seen corresponding path program 1 times [2020-09-25 10:07:32,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:32,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697291584] [2020-09-25 10:07:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:37,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 10:07:37,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:07:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 10:07:37,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:37,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:07:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:07:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:07:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:37,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:37,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:37,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:37,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:07:37,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:37,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:07:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:37,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:37,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:37,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:37,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:37,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 10:07:37,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:37,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:37,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:37,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:37,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:37,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:07:37,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:37,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 10:07:37,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:37,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:07:37,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697291584] [2020-09-25 10:07:37,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:37,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:07:37,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352481478] [2020-09-25 10:07:37,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:07:37,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:37,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:07:37,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:07:37,763 INFO L87 Difference]: Start difference. First operand 2114 states and 2512 transitions. Second operand 9 states.