/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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:39,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:39,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:39,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:39,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:39,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:39,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:39,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:39,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:39,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:39,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:39,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:39,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:39,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:39,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:39,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:39,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:39,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:39,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:39,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:39,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:39,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:39,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:39,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:39,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:39,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:39,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:39,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:39,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:39,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:39,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:39,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:39,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:39,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:39,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:39,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:39,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:39,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:39,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:39,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:39,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:39,631 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 13:30:39,672 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:39,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:39,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:39,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:39,675 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:39,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:39,676 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:39,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:39,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:39,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:39,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:39,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:39,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:39,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:39,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:39,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:39,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:39,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:39,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:39,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:39,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:39,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:39,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:39,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:39,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:39,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:39,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:39,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:39,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:39,681 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 13:30:40,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:40,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:40,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:40,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:40,196 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:40,197 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 13:30:40,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/574f2bdbd/2fc00831f24c4a5b84030410d4f52c64/FLAGc4d135123 [2020-09-25 13:30:40,939 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:40,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 13:30:40,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/574f2bdbd/2fc00831f24c4a5b84030410d4f52c64/FLAGc4d135123 [2020-09-25 13:30:41,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/574f2bdbd/2fc00831f24c4a5b84030410d4f52c64 [2020-09-25 13:30:41,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:41,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:41,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:41,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:41,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:41,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:41,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 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 13:30:41,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:41" (1/1) ... [2020-09-25 13:30:41,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:41,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:30:41,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:41,691 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:30:42,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:42,071 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:30:42,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:42 WrapperNode [2020-09-25 13:30:42,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:42,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:30:42,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:30:42,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:30:42,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:42" (1/1) ... [2020-09-25 13:30:42,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:42" (1/1) ... [2020-09-25 13:30:42,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:42" (1/1) ... [2020-09-25 13:30:42,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:42" (1/1) ... [2020-09-25 13:30:42,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:42" (1/1) ... [2020-09-25 13:30:42,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:42" (1/1) ... [2020-09-25 13:30:42,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:42" (1/1) ... [2020-09-25 13:30:42,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:30:42,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:30:42,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:30:42,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:30:42,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:42" (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 13:30:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:30:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:30:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:30:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:30:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:30:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:30:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:30:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:30:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:30:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:30:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:43,770 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:43,770 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:43,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:43 BoogieIcfgContainer [2020-09-25 13:30:43,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:43,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:43,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:43,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:43,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:41" (1/3) ... [2020-09-25 13:30:43,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 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 13:30:43,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:42" (2/3) ... [2020-09-25 13:30:43,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 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 13:30:43,788 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 13:30:43,790 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2020-09-25 13:30:43,803 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:43,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:43,850 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:43,884 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:43,885 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:43,885 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:43,885 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:43,885 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:43,885 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:43,885 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:43,886 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:30:43,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 13:30:43,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:43,941 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] [2020-09-25 13:30:43,942 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:43,950 INFO L82 PathProgramCache]: Analyzing trace with hash -299401006, now seen corresponding path program 1 times [2020-09-25 13:30:43,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:43,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 13:30:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:44,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:48,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:49,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 13:30:49,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:30:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 13:30:49,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:49,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:30:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:30:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:30:49,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:49,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:49,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:49,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 13:30:49,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:49,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:30:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:49,522 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 13:30:49,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 13:30:49,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:49,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:30:49,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492242676] [2020-09-25 13:30:49,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:30:49,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:49,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:30:49,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:30:49,557 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:30:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:51,890 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 13:30:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:30:51,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-09-25 13:30:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:51,927 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 13:30:51,927 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 13:30:51,936 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 13:30:51,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 13:30:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 13:30:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 13:30:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 13:30:52,041 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 119 [2020-09-25 13:30:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:52,061 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 13:30:52,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:30:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 13:30:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 13:30:52,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:52,075 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] [2020-09-25 13:30:52,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:52,076 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:52,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:52,076 INFO L82 PathProgramCache]: Analyzing trace with hash -637954050, now seen corresponding path program 1 times [2020-09-25 13:30:52,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:52,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182036085] [2020-09-25 13:30:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:52,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:56,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:57,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:57,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 13:30:57,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:30:57,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:30:57,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:57,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:30:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 13:30:57,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:30:57,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:57,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:57,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:57,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:57,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:57,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:30:57,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:57,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:57,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:30:57,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:30:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:57,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:57,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:30:57,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:57,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:30:57,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:57,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:30:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:57,406 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 13:30:57,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182036085] [2020-09-25 13:30:57,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:57,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:57,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092573176] [2020-09-25 13:30:57,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:57,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:57,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:57,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:57,411 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 13:30:59,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:59,429 INFO L93 Difference]: Finished difference Result 1753 states and 2210 transitions. [2020-09-25 13:30:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:59,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 13:30:59,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:59,439 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 13:30:59,439 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 13:30:59,442 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 13:30:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 13:30:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 13:30:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 13:30:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 13:30:59,488 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 137 [2020-09-25 13:30:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:59,489 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 13:30:59,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 13:30:59,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 13:30:59,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:59,500 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] [2020-09-25 13:30:59,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:59,500 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:59,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:59,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1018685367, now seen corresponding path program 1 times [2020-09-25 13:30:59,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:59,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691773338] [2020-09-25 13:30:59,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:59,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:00,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:00,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:00,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:03,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 13:31:03,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:31:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4109 [2020-09-25 13:31:03,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:03,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 13:31:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 13:31:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:03,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:03,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:03,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:03,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:31:03,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:03,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:03,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:03,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:03,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:03,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:03,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:03,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:31:03,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 13:31:03,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:03,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:31:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:03,909 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 13:31:03,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691773338] [2020-09-25 13:31:03,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:03,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:03,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395271550] [2020-09-25 13:31:03,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:03,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:03,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:03,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:03,915 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 5 states. [2020-09-25 13:31:06,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:06,177 INFO L93 Difference]: Finished difference Result 2310 states and 3030 transitions. [2020-09-25 13:31:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:06,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 13:31:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:06,199 INFO L225 Difference]: With dead ends: 2310 [2020-09-25 13:31:06,199 INFO L226 Difference]: Without dead ends: 1451 [2020-09-25 13:31:06,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:31:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2020-09-25 13:31:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1235. [2020-09-25 13:31:06,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2020-09-25 13:31:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1532 transitions. [2020-09-25 13:31:06,263 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1532 transitions. Word has length 153 [2020-09-25 13:31:06,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:06,265 INFO L479 AbstractCegarLoop]: Abstraction has 1235 states and 1532 transitions. [2020-09-25 13:31:06,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:06,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1532 transitions. [2020-09-25 13:31:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 13:31:06,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:06,274 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] [2020-09-25 13:31:06,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:31:06,277 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:06,279 INFO L82 PathProgramCache]: Analyzing trace with hash 278855818, now seen corresponding path program 1 times [2020-09-25 13:31:06,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:06,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749715477] [2020-09-25 13:31:06,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:06,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:06,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:08,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:08,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:11,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 13:31:11,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 13:31:11,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:11,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 13:31:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 13:31:11,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:11,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:11,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:11,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:11,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:11,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:31:11,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:11,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:11,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:11,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:11,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:31:11,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 13:31:11,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:11,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:31:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:11,660 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 13:31:11,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749715477] [2020-09-25 13:31:11,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:11,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:11,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610298330] [2020-09-25 13:31:11,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:11,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:11,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:11,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:11,665 INFO L87 Difference]: Start difference. First operand 1235 states and 1532 transitions. Second operand 5 states. [2020-09-25 13:31:13,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:13,230 INFO L93 Difference]: Finished difference Result 3273 states and 4223 transitions. [2020-09-25 13:31:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:13,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 13:31:13,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:13,245 INFO L225 Difference]: With dead ends: 3273 [2020-09-25 13:31:13,245 INFO L226 Difference]: Without dead ends: 2060 [2020-09-25 13:31:13,250 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 13:31:13,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2020-09-25 13:31:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1853. [2020-09-25 13:31:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1853 states. [2020-09-25 13:31:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2225 transitions. [2020-09-25 13:31:13,315 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2225 transitions. Word has length 157 [2020-09-25 13:31:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:13,316 INFO L479 AbstractCegarLoop]: Abstraction has 1853 states and 2225 transitions. [2020-09-25 13:31:13,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:13,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2225 transitions. [2020-09-25 13:31:13,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 13:31:13,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:13,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:13,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:31:13,325 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:13,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1683203294, now seen corresponding path program 1 times [2020-09-25 13:31:13,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:13,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651006697] [2020-09-25 13:31:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:13,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:17,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 13:31:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3722 [2020-09-25 13:31:17,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:17,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 13:31:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 13:31:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:17,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:17,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:17,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:31:17,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:17,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:17,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:17,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:17,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:17,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:31:17,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:17,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:31:17,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:17,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:17,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:17,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:31:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:17,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:17,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:17,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:31:17,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:31:17,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:17,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:31:17,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 13:31:17,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651006697] [2020-09-25 13:31:17,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:17,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:17,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544860305] [2020-09-25 13:31:17,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:17,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:17,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:17,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:17,302 INFO L87 Difference]: Start difference. First operand 1853 states and 2225 transitions. Second operand 5 states. [2020-09-25 13:31:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:19,378 INFO L93 Difference]: Finished difference Result 4494 states and 5610 transitions. [2020-09-25 13:31:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:19,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-09-25 13:31:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:19,392 INFO L225 Difference]: With dead ends: 4494 [2020-09-25 13:31:19,392 INFO L226 Difference]: Without dead ends: 2663 [2020-09-25 13:31:19,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:31:19,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2020-09-25 13:31:19,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2615. [2020-09-25 13:31:19,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2615 states. [2020-09-25 13:31:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3235 transitions. [2020-09-25 13:31:19,474 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3235 transitions. Word has length 176 [2020-09-25 13:31:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:19,474 INFO L479 AbstractCegarLoop]: Abstraction has 2615 states and 3235 transitions. [2020-09-25 13:31:19,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3235 transitions. [2020-09-25 13:31:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 13:31:19,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:19,488 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 13:31:19,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:31:19,488 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:19,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:19,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1371800963, now seen corresponding path program 1 times [2020-09-25 13:31:19,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:19,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312508699] [2020-09-25 13:31:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:19,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:24,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-25 13:31:24,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:31:24,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:31:24,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:24,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:24,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:24,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 13:31:24,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 13:31:24,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:24,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:24,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:24,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:31:24,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:24,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:24,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:24,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:24,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:31:24,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:24,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:31:24,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:24,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:24,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 13:31:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:24,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:24,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:24,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:31:24,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:24,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:31:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 13:31:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:24,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 13:31:24,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 13:31:24,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:24,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:24,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:31:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 13:31:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 13:31:25,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312508699] [2020-09-25 13:31:25,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:25,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:31:25,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704569183] [2020-09-25 13:31:25,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:31:25,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:25,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:31:25,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:31:25,011 INFO L87 Difference]: Start difference. First operand 2615 states and 3235 transitions. Second operand 7 states. [2020-09-25 13:31:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:26,999 INFO L93 Difference]: Finished difference Result 6042 states and 7619 transitions. [2020-09-25 13:31:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:31:27,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-09-25 13:31:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:27,019 INFO L225 Difference]: With dead ends: 6042 [2020-09-25 13:31:27,019 INFO L226 Difference]: Without dead ends: 3449 [2020-09-25 13:31:27,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:31:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2020-09-25 13:31:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 3077. [2020-09-25 13:31:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3077 states. [2020-09-25 13:31:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 3823 transitions. [2020-09-25 13:31:27,121 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 3823 transitions. Word has length 260 [2020-09-25 13:31:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:27,122 INFO L479 AbstractCegarLoop]: Abstraction has 3077 states and 3823 transitions. [2020-09-25 13:31:27,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:31:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 3823 transitions. [2020-09-25 13:31:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-25 13:31:27,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:27,137 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:27,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:31:27,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:27,138 INFO L82 PathProgramCache]: Analyzing trace with hash 2118568513, now seen corresponding path program 1 times [2020-09-25 13:31:27,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:27,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384993524] [2020-09-25 13:31:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:27,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:27,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:27,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking...