/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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:39,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:39,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:39,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:39,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:39,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:39,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:39,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:39,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:39,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:39,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:39,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:39,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:39,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:39,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:39,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:39,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:39,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:39,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:39,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:39,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:39,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:39,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:39,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:39,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:39,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:39,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:39,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:39,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:39,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:39,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:39,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:39,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:39,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:39,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:39,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:39,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:39,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:39,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:39,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:39,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:39,618 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 13:30:39,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:39,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:39,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:39,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:39,672 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:39,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:39,673 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:39,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:39,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:39,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:39,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:39,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:39,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:39,675 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:39,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:39,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:39,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:39,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:39,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:39,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:39,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:39,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:39,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:39,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:39,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:39,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:39,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:39,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:39,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:39,678 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 13:30:40,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:40,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:40,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:40,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:40,182 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:40,183 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 13:30:40,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b2c2625b/616fc8e7ca894fe1b6fe9bcfaeaf7da7/FLAGcabcf8d64 [2020-09-25 13:30:40,889 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:40,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 13:30:40,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b2c2625b/616fc8e7ca894fe1b6fe9bcfaeaf7da7/FLAGcabcf8d64 [2020-09-25 13:30:41,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b2c2625b/616fc8e7ca894fe1b6fe9bcfaeaf7da7 [2020-09-25 13:30:41,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:41,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:41,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:41,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:41,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:41,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:41,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41, skipping insertion in model container [2020-09-25 13:30:41,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:41,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:41,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:30:41,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:41,742 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:30:41,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:41,990 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:30:41,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41 WrapperNode [2020-09-25 13:30:41,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:41,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:30:41,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:30:41,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:30:42,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:42,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:42,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:42,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:42,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:42,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:42,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:42,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:30:42,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:30:42,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:30:42,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:30:42,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:30:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:30:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:30:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:30:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:30:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:30:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:30:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:30:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:30:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:30:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:43,473 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:43,474 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:43,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:43 BoogieIcfgContainer [2020-09-25 13:30:43,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:43,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:43,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:43,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:43,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:41" (1/3) ... [2020-09-25 13:30:43,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:43, skipping insertion in model container [2020-09-25 13:30:43,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:41" (2/3) ... [2020-09-25 13:30:43,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:43, skipping insertion in model container [2020-09-25 13:30:43,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:43" (3/3) ... [2020-09-25 13:30:43,496 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2020-09-25 13:30:43,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:43,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:43,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:43,593 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:43,594 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:43,595 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:43,595 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:43,595 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:43,595 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:43,595 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:43,595 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:43,635 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:30:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 13:30:43,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:43,676 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, 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 13:30:43,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:43,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:43,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1547939106, now seen corresponding path program 1 times [2020-09-25 13:30:43,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:43,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 13:30:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:44,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:47,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:48,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:48,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:48,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 13:30:48,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:30:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:30:48,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:48,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:30:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 13:30:48,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:30:49,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:49,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:49,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:49,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:30:49,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:49,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:49,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:49,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:49,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:30:49,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:49,362 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 13:30:49,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 13:30:49,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:49,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:30:49,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770172905] [2020-09-25 13:30:49,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:30:49,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:49,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:30:49,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:30:49,407 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:30:51,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:51,732 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 13:30:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:30:51,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 13:30:51,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:51,784 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 13:30:51,784 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 13:30:51,799 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 13:30:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 13:30:51,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 13:30:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 13:30:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 13:30:51,904 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 155 [2020-09-25 13:30:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:51,905 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 13:30:51,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:30:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 13:30:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 13:30:51,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:51,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:51,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:51,919 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:51,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1141989810, now seen corresponding path program 1 times [2020-09-25 13:30:51,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:51,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779959727] [2020-09-25 13:30:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:55,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:56,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:56,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 13:30:56,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:30:56,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:30:56,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:56,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:30:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 13:30:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:57,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:57,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:57,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:30:57,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:57,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:57,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:30:57,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:30:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:57,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:30:57,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:30:57,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:57,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:30:57,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:30:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:57,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779959727] [2020-09-25 13:30:57,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:57,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:57,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235990458] [2020-09-25 13:30:57,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:57,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:57,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:57,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:57,356 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 13:30:59,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:59,215 INFO L93 Difference]: Finished difference Result 1753 states and 2210 transitions. [2020-09-25 13:30:59,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:59,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 13:30:59,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:59,226 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 13:30:59,227 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 13:30:59,231 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 13:30:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 13:30:59,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 13:30:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 13:30:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 13:30:59,281 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 173 [2020-09-25 13:30:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:59,281 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 13:30:59,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 13:30:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 13:30:59,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:59,288 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, 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 13:30:59,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:59,288 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:59,289 INFO L82 PathProgramCache]: Analyzing trace with hash 372852103, now seen corresponding path program 1 times [2020-09-25 13:30:59,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:59,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092305095] [2020-09-25 13:30:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:59,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:02,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 13:31:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:31:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:04,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:31:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 13:31:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:04,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:04,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:04,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:31:04,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:04,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:04,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:04,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:31:04,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:04,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:31:04,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:04,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:31:04,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:31:04,727 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 13:31:04,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092305095] [2020-09-25 13:31:04,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:04,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:04,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888079845] [2020-09-25 13:31:04,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:04,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:04,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:04,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:04,734 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 5 states. [2020-09-25 13:31:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:06,907 INFO L93 Difference]: Finished difference Result 2220 states and 2949 transitions. [2020-09-25 13:31:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:06,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 13:31:06,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:06,920 INFO L225 Difference]: With dead ends: 2220 [2020-09-25 13:31:06,921 INFO L226 Difference]: Without dead ends: 1361 [2020-09-25 13:31:06,924 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 13:31:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-25 13:31:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1341. [2020-09-25 13:31:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-09-25 13:31:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1671 transitions. [2020-09-25 13:31:06,978 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1671 transitions. Word has length 189 [2020-09-25 13:31:06,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:06,979 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1671 transitions. [2020-09-25 13:31:06,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:06,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1671 transitions. [2020-09-25 13:31:06,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 13:31:06,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:06,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:06,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:31:06,987 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:06,987 INFO L82 PathProgramCache]: Analyzing trace with hash 835170522, now seen corresponding path program 1 times [2020-09-25 13:31:06,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:06,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680350703] [2020-09-25 13:31:06,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:08,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:08,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:12,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:12,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 13:31:12,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:31:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:31:12,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:12,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 13:31:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 13:31:12,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:12,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:12,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:12,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:12,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:12,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:31:12,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:12,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:31:12,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:12,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:12,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:12,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:31:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 13:31:12,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:12,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:31:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:12,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680350703] [2020-09-25 13:31:12,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:12,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:12,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692800607] [2020-09-25 13:31:12,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:12,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:12,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:12,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:12,361 INFO L87 Difference]: Start difference. First operand 1341 states and 1671 transitions. Second operand 5 states. [2020-09-25 13:31:14,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:14,218 INFO L93 Difference]: Finished difference Result 3173 states and 4119 transitions. [2020-09-25 13:31:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:14,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-25 13:31:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:14,229 INFO L225 Difference]: With dead ends: 3173 [2020-09-25 13:31:14,229 INFO L226 Difference]: Without dead ends: 1854 [2020-09-25 13:31:14,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 13:31:14,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-09-25 13:31:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1649. [2020-09-25 13:31:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-09-25 13:31:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2021 transitions. [2020-09-25 13:31:14,296 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2021 transitions. Word has length 193 [2020-09-25 13:31:14,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:14,297 INFO L479 AbstractCegarLoop]: Abstraction has 1649 states and 2021 transitions. [2020-09-25 13:31:14,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:14,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2021 transitions. [2020-09-25 13:31:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 13:31:14,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:14,306 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:14,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:31:14,307 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:14,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1196319558, now seen corresponding path program 1 times [2020-09-25 13:31:14,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:14,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742343844] [2020-09-25 13:31:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:17,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:19,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 13:31:19,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:31:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:31:19,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:19,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:31:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 13:31:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:31:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:19,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:19,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:19,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:19,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:31:19,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:19,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:19,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:19,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:19,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:19,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:31:19,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:19,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:19,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:19,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 13:31:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:19,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:31:19,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 13:31:19,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:19,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:31:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:31:19,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 13:31:19,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742343844] [2020-09-25 13:31:19,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:19,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:31:19,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715125383] [2020-09-25 13:31:19,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:31:19,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:19,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:31:19,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:31:19,896 INFO L87 Difference]: Start difference. First operand 1649 states and 2021 transitions. Second operand 8 states. [2020-09-25 13:31:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:22,857 INFO L93 Difference]: Finished difference Result 3689 states and 4700 transitions. [2020-09-25 13:31:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:31:22,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-09-25 13:31:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:22,870 INFO L225 Difference]: With dead ends: 3689 [2020-09-25 13:31:22,870 INFO L226 Difference]: Without dead ends: 1964 [2020-09-25 13:31:22,876 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 13:31:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-09-25 13:31:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1945. [2020-09-25 13:31:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2020-09-25 13:31:22,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2344 transitions. [2020-09-25 13:31:22,925 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2344 transitions. Word has length 224 [2020-09-25 13:31:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:22,926 INFO L479 AbstractCegarLoop]: Abstraction has 1945 states and 2344 transitions. [2020-09-25 13:31:22,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:31:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2344 transitions. [2020-09-25 13:31:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 13:31:22,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:22,935 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:22,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:31:22,936 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:22,936 INFO L82 PathProgramCache]: Analyzing trace with hash -2072001832, now seen corresponding path program 1 times [2020-09-25 13:31:22,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:22,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145463298] [2020-09-25 13:31:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:28,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:28,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-25 13:31:28,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:31:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 13:31:28,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:28,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:31:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:31:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-09-25 13:31:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:28,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:28,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:28,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:28,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:31:28,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:28,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:31:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:28,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:28,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:28,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:31:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:31:28,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:28,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:31:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:28,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 13:31:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:28,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:28,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:28,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:28,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:31:28,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:31:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-25 13:31:28,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:28,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:31:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 13:31:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 13:31:29,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145463298] [2020-09-25 13:31:29,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:29,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:31:29,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079712868] [2020-09-25 13:31:29,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:31:29,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:29,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:31:29,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:31:29,122 INFO L87 Difference]: Start difference. First operand 1945 states and 2344 transitions. Second operand 11 states.