/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:41,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:41,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:41,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:41,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:41,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:41,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:41,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:41,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:41,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:41,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:41,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:41,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:41,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:41,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:41,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:41,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:41,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:41,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:41,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:41,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:41,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:41,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:41,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:41,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:41,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:41,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:41,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:41,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:41,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:41,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:41,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:41,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:41,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:41,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:41,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:41,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:41,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:41,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:41,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:41,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:41,604 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 13:30:41,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:41,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:41,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:41,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:41,633 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:41,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:41,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:41,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:41,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:41,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:41,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:41,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:41,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:41,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:41,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:41,635 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:41,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:41,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:41,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:41,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:41,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:41,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:41,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:41,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:41,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:41,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:41,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:41,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:41,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:41,638 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:30:42,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:42,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:42,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:42,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:42,115 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:42,116 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-09-25 13:30:42,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d844493fd/8f0cb6654ec0421594f606a837938f1d/FLAG5a9813b2c [2020-09-25 13:30:42,885 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:42,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-09-25 13:30:42,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d844493fd/8f0cb6654ec0421594f606a837938f1d/FLAG5a9813b2c [2020-09-25 13:30:43,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d844493fd/8f0cb6654ec0421594f606a837938f1d [2020-09-25 13:30:43,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:43,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:43,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:43,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:43,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:43,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:43" (1/1) ... [2020-09-25 13:30:43,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@481c894b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43, skipping insertion in model container [2020-09-25 13:30:43,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:43" (1/1) ... [2020-09-25 13:30:43,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:43,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:30:43,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:43,667 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:30:43,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:43,928 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:30:43,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43 WrapperNode [2020-09-25 13:30:43,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:43,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:30:43,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:30:43,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:30:43,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43" (1/1) ... [2020-09-25 13:30:43,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43" (1/1) ... [2020-09-25 13:30:43,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43" (1/1) ... [2020-09-25 13:30:43,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43" (1/1) ... [2020-09-25 13:30:44,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43" (1/1) ... [2020-09-25 13:30:44,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43" (1/1) ... [2020-09-25 13:30:44,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43" (1/1) ... [2020-09-25 13:30:44,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:30:44,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:30:44,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:30:44,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:30:44,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43" (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 13:30:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:30:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:30:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:30:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:30:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:30:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:30:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:30:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:30:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:30:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:30:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:45,570 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:45,570 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:45,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:45 BoogieIcfgContainer [2020-09-25 13:30:45,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:45,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:45,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:45,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:45,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:43" (1/3) ... [2020-09-25 13:30:45,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7960c69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:45, skipping insertion in model container [2020-09-25 13:30:45,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:43" (2/3) ... [2020-09-25 13:30:45,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7960c69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:45, skipping insertion in model container [2020-09-25 13:30:45,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:45" (3/3) ... [2020-09-25 13:30:45,595 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2020-09-25 13:30:45,610 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:45,633 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:45,658 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:45,703 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:45,704 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:45,704 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:45,704 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:45,704 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:45,704 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:45,704 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:45,705 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:30:45,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 13:30:45,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:45,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:45,792 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:45,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:45,800 INFO L82 PathProgramCache]: Analyzing trace with hash -361381607, now seen corresponding path program 1 times [2020-09-25 13:30:45,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:45,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067186703] [2020-09-25 13:30:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:51,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:51,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 13:30:51,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:30:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 13:30:51,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:51,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:30:51,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 13:30:51,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:30:51,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:51,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:51,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:51,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 13:30:51,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:51,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:30:51,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:51,471 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 13:30:51,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067186703] [2020-09-25 13:30:51,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:51,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:30:51,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611336224] [2020-09-25 13:30:51,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:30:51,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:51,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:30:51,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:30:51,509 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:30:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:53,811 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 13:30:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:30:53,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-25 13:30:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:53,838 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 13:30:53,838 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 13:30:53,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:53,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 13:30:53,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 13:30:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 13:30:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 13:30:53,953 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 132 [2020-09-25 13:30:53,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:53,954 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 13:30:53,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:30:53,954 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 13:30:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 13:30:53,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:53,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:53,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:53,961 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:53,962 INFO L82 PathProgramCache]: Analyzing trace with hash 799045204, now seen corresponding path program 1 times [2020-09-25 13:30:53,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:53,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732061098] [2020-09-25 13:30:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:54,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:55,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:57,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:59,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:59,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 13:30:59,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:30:59,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:30:59,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:59,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:59,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:30:59,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 13:30:59,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:59,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:59,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:59,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:59,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:59,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:30:59,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:59,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:59,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:59,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:30:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:59,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:59,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:59,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:30:59,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:30:59,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:59,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:30:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:59,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732061098] [2020-09-25 13:30:59,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:59,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:30:59,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309056715] [2020-09-25 13:30:59,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:30:59,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:59,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:30:59,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:59,373 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 6 states. [2020-09-25 13:31:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:01,988 INFO L93 Difference]: Finished difference Result 1864 states and 2490 transitions. [2020-09-25 13:31:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:31:01,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-25 13:31:01,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:02,000 INFO L225 Difference]: With dead ends: 1864 [2020-09-25 13:31:02,000 INFO L226 Difference]: Without dead ends: 1273 [2020-09-25 13:31:02,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:31:02,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-09-25 13:31:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1226. [2020-09-25 13:31:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-09-25 13:31:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1562 transitions. [2020-09-25 13:31:02,072 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1562 transitions. Word has length 166 [2020-09-25 13:31:02,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:02,072 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1562 transitions. [2020-09-25 13:31:02,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:31:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1562 transitions. [2020-09-25 13:31:02,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 13:31:02,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:02,080 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:02,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:31:02,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1054949660, now seen corresponding path program 1 times [2020-09-25 13:31:02,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:02,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977472171] [2020-09-25 13:31:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:07,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 13:31:07,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:31:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 13:31:07,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:07,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:07,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:31:07,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 13:31:07,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:31:07,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:31:07,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:07,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:07,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:07,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:31:07,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:07,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:07,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:07,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:07,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:31:07,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:31:07,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:07,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:07,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:31:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:07,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:07,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:31:07,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 13:31:07,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:07,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:31:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:31:07,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:31:07,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977472171] [2020-09-25 13:31:07,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:07,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:31:07,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428339955] [2020-09-25 13:31:07,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:31:07,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:07,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:31:07,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:31:07,731 INFO L87 Difference]: Start difference. First operand 1226 states and 1562 transitions. Second operand 8 states. [2020-09-25 13:31:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:10,523 INFO L93 Difference]: Finished difference Result 2702 states and 3553 transitions. [2020-09-25 13:31:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:31:10,524 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-09-25 13:31:10,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:10,539 INFO L225 Difference]: With dead ends: 2702 [2020-09-25 13:31:10,539 INFO L226 Difference]: Without dead ends: 1400 [2020-09-25 13:31:10,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:31:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2020-09-25 13:31:10,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1374. [2020-09-25 13:31:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-09-25 13:31:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1728 transitions. [2020-09-25 13:31:10,619 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1728 transitions. Word has length 190 [2020-09-25 13:31:10,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:10,620 INFO L479 AbstractCegarLoop]: Abstraction has 1374 states and 1728 transitions. [2020-09-25 13:31:10,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:31:10,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1728 transitions. [2020-09-25 13:31:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 13:31:10,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:10,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:10,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:31:10,632 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:10,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1817707598, now seen corresponding path program 1 times [2020-09-25 13:31:10,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:10,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203933344] [2020-09-25 13:31:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:10,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:13,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 13:31:15,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:31:15,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:31:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:31:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-09-25 13:31:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:15,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:15,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:16,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:16,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 13:31:16,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:16,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:16,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:31:16,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:31:16,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:16,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:16,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:16,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:31:16,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:31:16,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-09-25 13:31:16,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:16,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:31:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 13:31:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:17,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203933344] [2020-09-25 13:31:17,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:17,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:31:17,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671126294] [2020-09-25 13:31:17,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:31:17,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:17,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:31:17,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:31:17,008 INFO L87 Difference]: Start difference. First operand 1374 states and 1728 transitions. Second operand 13 states. [2020-09-25 13:31:17,655 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-25 13:31:22,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:22,556 INFO L93 Difference]: Finished difference Result 4785 states and 6225 transitions. [2020-09-25 13:31:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 13:31:22,557 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 216 [2020-09-25 13:31:22,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:22,579 INFO L225 Difference]: With dead ends: 4785 [2020-09-25 13:31:22,580 INFO L226 Difference]: Without dead ends: 3433 [2020-09-25 13:31:22,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2020-09-25 13:31:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2020-09-25 13:31:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 2858. [2020-09-25 13:31:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2858 states. [2020-09-25 13:31:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 3545 transitions. [2020-09-25 13:31:22,718 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 3545 transitions. Word has length 216 [2020-09-25 13:31:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:22,719 INFO L479 AbstractCegarLoop]: Abstraction has 2858 states and 3545 transitions. [2020-09-25 13:31:22,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:31:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 3545 transitions. [2020-09-25 13:31:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-25 13:31:22,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:22,761 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, 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] [2020-09-25 13:31:22,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:31:22,762 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:22,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:22,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1548778560, now seen corresponding path program 1 times [2020-09-25 13:31:22,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:22,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727303662] [2020-09-25 13:31:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:22,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:27,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:27,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 13:31:27,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:31:27,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4277 [2020-09-25 13:31:27,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:27,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:27,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:31:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:31:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 13:31:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:31:27,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:27,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:27,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:27,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:27,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:31:27,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:27,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:31:27,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:27,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:27,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:27,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 13:31:27,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:31:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 13:31:27,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:27,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:31:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 13:31:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:27,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:27,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:27,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:27,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:31:27,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:31:27,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-09-25 13:31:27,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:27,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:31:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:31:27,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 13:31:28,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727303662] [2020-09-25 13:31:28,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:28,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:31:28,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579422909] [2020-09-25 13:31:28,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:31:28,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:28,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:31:28,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:31:28,170 INFO L87 Difference]: Start difference. First operand 2858 states and 3545 transitions. Second operand 10 states.