/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:49,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:49,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:49,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:49,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:49,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:49,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:49,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:49,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:49,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:49,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:49,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:49,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:49,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:49,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:49,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:49,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:49,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:49,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:49,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:49,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:49,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:49,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:49,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:49,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:49,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:49,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:49,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:49,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:49,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:49,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:49,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:49,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:49,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:49,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:49,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:49,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:49,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:49,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:49,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:49,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:49,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:21:49,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:49,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:49,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:49,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:49,274 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:49,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:49,275 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:49,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:49,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:49,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:49,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:49,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:49,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:49,278 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:49,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:49,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:49,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:49,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:49,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:49,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:49,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:49,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:49,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:49,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:49,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:49,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:49,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:49,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:49,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:49,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:21:49,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:49,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:49,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:49,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:49,740 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:49,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 12:21:49,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1007472b/d382a30373204b7f9eb63d6fcf4e9698/FLAG7f3e4223e [2020-09-25 12:21:50,479 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:50,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 12:21:50,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1007472b/d382a30373204b7f9eb63d6fcf4e9698/FLAG7f3e4223e [2020-09-25 12:21:50,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1007472b/d382a30373204b7f9eb63d6fcf4e9698 [2020-09-25 12:21:50,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:50,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:50,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:50,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:50,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:50,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:50" (1/1) ... [2020-09-25 12:21:50,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3225ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:50, skipping insertion in model container [2020-09-25 12:21:50,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:50" (1/1) ... [2020-09-25 12:21:50,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:50,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:51,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:51,292 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:51,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:51,584 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:51,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:51 WrapperNode [2020-09-25 12:21:51,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:51,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:51,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:51,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:51,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:51" (1/1) ... [2020-09-25 12:21:51,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:51" (1/1) ... [2020-09-25 12:21:51,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:51" (1/1) ... [2020-09-25 12:21:51,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:51" (1/1) ... [2020-09-25 12:21:51,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:51" (1/1) ... [2020-09-25 12:21:51,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:51" (1/1) ... [2020-09-25 12:21:51,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:51" (1/1) ... [2020-09-25 12:21:51,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:51,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:51,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:51,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:51,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:53,156 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:53,157 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:53,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:53 BoogieIcfgContainer [2020-09-25 12:21:53,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:53,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:53,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:53,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:53,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:50" (1/3) ... [2020-09-25 12:21:53,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42df4b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:53, skipping insertion in model container [2020-09-25 12:21:53,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:51" (2/3) ... [2020-09-25 12:21:53,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42df4b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:53, skipping insertion in model container [2020-09-25 12:21:53,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:53" (3/3) ... [2020-09-25 12:21:53,177 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2020-09-25 12:21:53,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:53,201 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:53,225 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:53,261 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:53,261 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:53,262 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:53,262 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:53,262 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:53,262 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:53,262 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:53,262 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 12:21:53,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:53,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:53,318 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:53,329 INFO L82 PathProgramCache]: Analyzing trace with hash -850053121, now seen corresponding path program 1 times [2020-09-25 12:21:53,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:53,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96473516] [2020-09-25 12:21:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:58,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 12:21:58,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:21:58,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:21:58,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:58,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:21:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:21:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:21:58,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:58,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:58,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:58,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:21:58,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:58,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:21:58,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:58,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96473516] [2020-09-25 12:21:58,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:58,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:58,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007605837] [2020-09-25 12:21:58,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:58,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:59,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:59,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:59,007 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:22:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:01,135 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 12:22:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:22:01,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-09-25 12:22:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:01,172 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 12:22:01,173 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 12:22:01,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:01,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 12:22:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 12:22:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:22:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 12:22:01,286 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 108 [2020-09-25 12:22:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:01,288 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 12:22:01,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:22:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 12:22:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 12:22:01,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:01,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:01,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:22:01,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:01,298 INFO L82 PathProgramCache]: Analyzing trace with hash 626429774, now seen corresponding path program 1 times [2020-09-25 12:22:01,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:01,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711500444] [2020-09-25 12:22:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:01,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:01,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 12:22:01,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-25 12:22:01,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:01,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:22:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:22:01,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:01,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:01,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:01,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:01,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:01,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 12:22:01,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:01,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:01,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:01,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:01,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:01,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:01,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:01,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:01,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:22:01,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:01,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:22:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:02,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711500444] [2020-09-25 12:22:02,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:02,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:02,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67412212] [2020-09-25 12:22:02,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:02,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:02,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:02,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:02,029 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 5 states. [2020-09-25 12:22:04,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:04,040 INFO L93 Difference]: Finished difference Result 1499 states and 1830 transitions. [2020-09-25 12:22:04,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:04,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 12:22:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:04,048 INFO L225 Difference]: With dead ends: 1499 [2020-09-25 12:22:04,048 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 12:22:04,052 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 12:22:04,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 12:22:04,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 891. [2020-09-25 12:22:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 12:22:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1042 transitions. [2020-09-25 12:22:04,113 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1042 transitions. Word has length 129 [2020-09-25 12:22:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:04,114 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1042 transitions. [2020-09-25 12:22:04,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1042 transitions. [2020-09-25 12:22:04,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 12:22:04,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:04,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:04,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:22:04,124 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:04,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:04,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1590256115, now seen corresponding path program 1 times [2020-09-25 12:22:04,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:04,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613534575] [2020-09-25 12:22:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:04,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:05,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:05,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:05,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:09,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 12:22:09,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 12:22:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 12:22:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:09,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:22:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 12:22:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:09,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:09,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:09,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:09,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:22:09,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:09,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:09,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:22:09,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:09,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:22:09,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:09,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:09,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:09,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:22:09,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:09,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613534575] [2020-09-25 12:22:09,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:09,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:09,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726196455] [2020-09-25 12:22:09,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:09,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:09,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:09,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:09,414 INFO L87 Difference]: Start difference. First operand 891 states and 1042 transitions. Second operand 5 states. [2020-09-25 12:22:11,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:11,313 INFO L93 Difference]: Finished difference Result 2363 states and 2850 transitions. [2020-09-25 12:22:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:11,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-09-25 12:22:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:11,325 INFO L225 Difference]: With dead ends: 2363 [2020-09-25 12:22:11,326 INFO L226 Difference]: Without dead ends: 1348 [2020-09-25 12:22:11,335 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 12:22:11,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-09-25 12:22:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1313. [2020-09-25 12:22:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2020-09-25 12:22:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1553 transitions. [2020-09-25 12:22:11,401 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1553 transitions. Word has length 130 [2020-09-25 12:22:11,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:11,402 INFO L479 AbstractCegarLoop]: Abstraction has 1313 states and 1553 transitions. [2020-09-25 12:22:11,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:11,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1553 transitions. [2020-09-25 12:22:11,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 12:22:11,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:11,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:11,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:11,410 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:11,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:11,413 INFO L82 PathProgramCache]: Analyzing trace with hash -247402504, now seen corresponding path program 1 times [2020-09-25 12:22:11,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:11,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376212404] [2020-09-25 12:22:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:11,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:16,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:16,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 12:22:16,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:16,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:22:16,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:16,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:22:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:22:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:22:16,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:16,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:16,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:16,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:16,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:16,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 12:22:16,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:16,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:22:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:22:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:16,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:16,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:16,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:16,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:16,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:16,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 12:22:16,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:16,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:22:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:22:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:16,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:16,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:16,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:22:16,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 12:22:16,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:16,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:16,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:16,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:16,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:22:16,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:22:17,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376212404] [2020-09-25 12:22:17,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:17,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:22:17,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787793433] [2020-09-25 12:22:17,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:22:17,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:17,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:22:17,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:22:17,063 INFO L87 Difference]: Start difference. First operand 1313 states and 1553 transitions. Second operand 9 states. [2020-09-25 12:22:19,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:19,824 INFO L93 Difference]: Finished difference Result 4013 states and 4978 transitions. [2020-09-25 12:22:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:22:19,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 154 [2020-09-25 12:22:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:19,842 INFO L225 Difference]: With dead ends: 4013 [2020-09-25 12:22:19,842 INFO L226 Difference]: Without dead ends: 2522 [2020-09-25 12:22:19,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:22:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2020-09-25 12:22:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2449. [2020-09-25 12:22:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2449 states. [2020-09-25 12:22:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 2884 transitions. [2020-09-25 12:22:19,938 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 2884 transitions. Word has length 154 [2020-09-25 12:22:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:19,940 INFO L479 AbstractCegarLoop]: Abstraction has 2449 states and 2884 transitions. [2020-09-25 12:22:19,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:22:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 2884 transitions. [2020-09-25 12:22:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 12:22:19,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:19,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:22:19,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:19,950 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:19,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:19,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1106704956, now seen corresponding path program 1 times [2020-09-25 12:22:19,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:19,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516500443] [2020-09-25 12:22:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:20,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:20,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:20,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:20,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:21,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:21,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:21,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:24,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:24,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 12:22:24,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:22:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 12:22:24,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:24,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:22:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:22:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:22:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:25,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:25,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:25,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:25,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:25,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:22:25,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:25,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:22:25,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:25,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:22:25,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:25,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 12:22:25,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:25,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:22:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:22:25,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:25,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 12:22:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:25,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:22:25,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:25,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 12:22:25,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:25,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:22:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:22:25,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516500443] [2020-09-25 12:22:25,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:25,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:22:25,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807139767] [2020-09-25 12:22:25,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:22:25,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:25,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:22:25,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:22:25,469 INFO L87 Difference]: Start difference. First operand 2449 states and 2884 transitions. Second operand 10 states. [2020-09-25 12:22:26,273 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 12:22:26,724 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 12:22:28,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:28,673 INFO L93 Difference]: Finished difference Result 5476 states and 6666 transitions. [2020-09-25 12:22:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 12:22:28,674 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-09-25 12:22:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:28,695 INFO L225 Difference]: With dead ends: 5476 [2020-09-25 12:22:28,695 INFO L226 Difference]: Without dead ends: 3051 [2020-09-25 12:22:28,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2020-09-25 12:22:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2020-09-25 12:22:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2767. [2020-09-25 12:22:28,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2767 states. [2020-09-25 12:22:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 3289 transitions. [2020-09-25 12:22:28,806 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 3289 transitions. Word has length 162 [2020-09-25 12:22:28,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:28,807 INFO L479 AbstractCegarLoop]: Abstraction has 2767 states and 3289 transitions. [2020-09-25 12:22:28,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:22:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 3289 transitions. [2020-09-25 12:22:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 12:22:28,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:28,817 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:28,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:22:28,817 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:28,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:28,818 INFO L82 PathProgramCache]: Analyzing trace with hash 900247765, now seen corresponding path program 1 times [2020-09-25 12:22:28,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:28,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753810808] [2020-09-25 12:22:28,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:29,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:33,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:33,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 12:22:33,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:22:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 12:22:33,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:33,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:22:33,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:22:33,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:22:33,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:33,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:34,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:34,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:34,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:22:34,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:34,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:22:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:34,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:34,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 12:22:34,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 12:22:34,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:34,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:22:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:22:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:34,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 12:22:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:34,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:34,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:22:34,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 12:22:34,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:34,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:22:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:22:34,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753810808] [2020-09-25 12:22:34,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:34,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:22:34,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584918569] [2020-09-25 12:22:34,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:22:34,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:34,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:22:34,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:22:34,340 INFO L87 Difference]: Start difference. First operand 2767 states and 3289 transitions. Second operand 9 states. [2020-09-25 12:22:36,542 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-09-25 12:22:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:38,287 INFO L93 Difference]: Finished difference Result 6001 states and 7183 transitions. [2020-09-25 12:22:38,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 12:22:38,292 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-09-25 12:22:38,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:38,309 INFO L225 Difference]: With dead ends: 6001 [2020-09-25 12:22:38,309 INFO L226 Difference]: Without dead ends: 3250 [2020-09-25 12:22:38,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:22:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-25 12:22:38,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 3045. [2020-09-25 12:22:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3045 states. [2020-09-25 12:22:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 3611 transitions. [2020-09-25 12:22:38,396 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 3611 transitions. Word has length 176 [2020-09-25 12:22:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:38,397 INFO L479 AbstractCegarLoop]: Abstraction has 3045 states and 3611 transitions. [2020-09-25 12:22:38,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:22:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 3611 transitions. [2020-09-25 12:22:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 12:22:38,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:38,406 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:22:38,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:22:38,407 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:38,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:38,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1085624187, now seen corresponding path program 1 times [2020-09-25 12:22:38,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:38,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520337287] [2020-09-25 12:22:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:38,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking...