/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:25:54,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:25:54,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:25:54,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:25:54,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:25:54,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:25:54,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:25:54,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:25:54,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:25:54,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:25:54,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:25:54,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:25:54,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:25:54,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:25:54,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:25:54,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:25:54,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:25:54,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:25:54,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:25:54,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:25:54,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:25:54,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:25:54,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:25:54,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:25:54,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:25:54,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:25:54,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:25:54,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:25:54,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:25:54,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:25:54,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:25:54,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:25:54,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:25:54,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:25:54,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:25:54,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:25:54,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:25:54,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:25:54,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:25:54,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:25:54,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:25:54,155 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 [2020-10-14 22:25:54,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:25:54,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:25:54,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:25:54,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:25:54,182 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:25:54,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:25:54,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:25:54,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:25:54,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:25:54,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:25:54,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:25:54,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:25:54,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:25:54,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:25:54,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:25:54,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:25:54,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:25:54,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:25:54,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:25:54,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:25:54,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:25:54,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:25:54,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:25:54,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:25:54,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:25:54,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:25:54,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:25:54,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:25:54,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:25:54,187 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:25:54,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:25:54,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:25:54,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:25:54,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:25:54,543 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:25:54,544 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label12.c [2020-10-14 22:25:54,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c1a8e67a/29465864d7ab498492d922da1307bc09/FLAGee097c716 [2020-10-14 22:25:55,288 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:25:55,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label12.c [2020-10-14 22:25:55,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c1a8e67a/29465864d7ab498492d922da1307bc09/FLAGee097c716 [2020-10-14 22:25:55,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c1a8e67a/29465864d7ab498492d922da1307bc09 [2020-10-14 22:25:55,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:25:55,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:25:55,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:25:55,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:25:55,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:25:55,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:25:55" (1/1) ... [2020-10-14 22:25:55,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf6174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:55, skipping insertion in model container [2020-10-14 22:25:55,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:25:55" (1/1) ... [2020-10-14 22:25:55,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:25:55,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:25:56,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:25:56,836 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:25:57,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:25:57,268 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:25:57,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:57 WrapperNode [2020-10-14 22:25:57,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:25:57,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:25:57,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:25:57,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:25:57,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:57" (1/1) ... [2020-10-14 22:25:57,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:57" (1/1) ... [2020-10-14 22:25:57,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:57" (1/1) ... [2020-10-14 22:25:57,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:57" (1/1) ... [2020-10-14 22:25:57,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:57" (1/1) ... [2020-10-14 22:25:57,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:57" (1/1) ... [2020-10-14 22:25:57,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:57" (1/1) ... [2020-10-14 22:25:57,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:25:57,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:25:57,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:25:57,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:25:57,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:57" (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 [2020-10-14 22:25:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:25:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:25:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:25:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:25:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:25:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:25:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:25:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:25:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:25:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:25:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:25:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:25:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:26:06,104 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:26:06,105 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:26:06,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:26:06 BoogieIcfgContainer [2020-10-14 22:26:06,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:26:06,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:26:06,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:26:06,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:26:06,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:25:55" (1/3) ... [2020-10-14 22:26:06,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6f89d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:26:06, skipping insertion in model container [2020-10-14 22:26:06,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:57" (2/3) ... [2020-10-14 22:26:06,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6f89d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:26:06, skipping insertion in model container [2020-10-14 22:26:06,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:26:06" (3/3) ... [2020-10-14 22:26:06,126 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label12.c [2020-10-14 22:26:06,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:26:06,148 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:26:06,165 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:26:06,198 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:26:06,198 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:26:06,199 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:26:06,199 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:26:06,199 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:26:06,199 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:26:06,199 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:26:06,200 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:26:06,234 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:26:06,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 22:26:06,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:06,244 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] [2020-10-14 22:26:06,245 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1305319639, now seen corresponding path program 1 times [2020-10-14 22:26:06,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:06,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217549098] [2020-10-14 22:26:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:07,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:07,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 22:26:07,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-14 22:26:07,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:07,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:26:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:26:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 22:26:07,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:26:07,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:07,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:07,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:07,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:26:07,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:07,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:26:07,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:26:07,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217549098] [2020-10-14 22:26:07,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:26:07,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:26:07,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476682427] [2020-10-14 22:26:07,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:26:07,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:07,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:26:07,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:26:07,235 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2020-10-14 22:26:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:20,523 INFO L93 Difference]: Finished difference Result 2167 states and 4005 transitions. [2020-10-14 22:26:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:26:20,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 22:26:20,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:20,555 INFO L225 Difference]: With dead ends: 2167 [2020-10-14 22:26:20,555 INFO L226 Difference]: Without dead ends: 1470 [2020-10-14 22:26:20,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2020-10-14 22:26:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1450. [2020-10-14 22:26:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-10-14 22:26:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2032 transitions. [2020-10-14 22:26:20,753 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2032 transitions. Word has length 39 [2020-10-14 22:26:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:20,754 INFO L479 AbstractCegarLoop]: Abstraction has 1450 states and 2032 transitions. [2020-10-14 22:26:20,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:26:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2032 transitions. [2020-10-14 22:26:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 22:26:20,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:20,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:26:20,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:26:20,761 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:20,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1368383281, now seen corresponding path program 1 times [2020-10-14 22:26:20,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:20,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147601044] [2020-10-14 22:26:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:20,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:21,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:21,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:21,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:26:21,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:26:21,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-14 22:26:21,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:21,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:26:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:26:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:26:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:26:22,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:22,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:22,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:22,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:22,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:26:22,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:22,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:26:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:22,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:22,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:22,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:26:22,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 22:26:22,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:22,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:26:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:26:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:26:22,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147601044] [2020-10-14 22:26:22,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:22,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:26:22,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523429702] [2020-10-14 22:26:22,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:26:22,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:22,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:26:22,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:26:22,559 INFO L87 Difference]: Start difference. First operand 1450 states and 2032 transitions. Second operand 8 states. [2020-10-14 22:26:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:38,296 INFO L93 Difference]: Finished difference Result 3913 states and 5605 transitions. [2020-10-14 22:26:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:26:38,297 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-14 22:26:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:38,313 INFO L225 Difference]: With dead ends: 3913 [2020-10-14 22:26:38,314 INFO L226 Difference]: Without dead ends: 2426 [2020-10-14 22:26:38,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:26:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2020-10-14 22:26:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2368. [2020-10-14 22:26:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2368 states. [2020-10-14 22:26:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3298 transitions. [2020-10-14 22:26:38,400 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3298 transitions. Word has length 113 [2020-10-14 22:26:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:38,401 INFO L479 AbstractCegarLoop]: Abstraction has 2368 states and 3298 transitions. [2020-10-14 22:26:38,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:26:38,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3298 transitions. [2020-10-14 22:26:38,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 22:26:38,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:38,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:26:38,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:26:38,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:38,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:38,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1227409727, now seen corresponding path program 1 times [2020-10-14 22:26:38,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:38,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587958467] [2020-10-14 22:26:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:38,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:38,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 22:26:38,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 22:26:38,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:38,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:26:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 22:26:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:38,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:38,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:38,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:26:38,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:38,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:38,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:38,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:38,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:38,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:38,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 22:26:38,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:38,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:38,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:38,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:38,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:26:38,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:26:39,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587958467] [2020-10-14 22:26:39,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:39,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:26:39,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100252424] [2020-10-14 22:26:39,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:26:39,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:39,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:26:39,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:26:39,033 INFO L87 Difference]: Start difference. First operand 2368 states and 3298 transitions. Second operand 5 states. [2020-10-14 22:26:51,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:51,366 INFO L93 Difference]: Finished difference Result 7016 states and 9862 transitions. [2020-10-14 22:26:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:26:51,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-14 22:26:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:51,403 INFO L225 Difference]: With dead ends: 7016 [2020-10-14 22:26:51,403 INFO L226 Difference]: Without dead ends: 4654 [2020-10-14 22:26:51,411 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 [2020-10-14 22:26:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2020-10-14 22:26:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 4640. [2020-10-14 22:26:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4640 states. [2020-10-14 22:26:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 6009 transitions. [2020-10-14 22:26:51,547 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 6009 transitions. Word has length 126 [2020-10-14 22:26:51,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:51,548 INFO L479 AbstractCegarLoop]: Abstraction has 4640 states and 6009 transitions. [2020-10-14 22:26:51,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:26:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 6009 transitions. [2020-10-14 22:26:51,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 22:26:51,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:51,552 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:26:51,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:26:51,552 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:51,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:51,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1430391076, now seen corresponding path program 1 times [2020-10-14 22:26:51,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:51,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985838915] [2020-10-14 22:26:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:51,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:51,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:53,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:53,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:26:53,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:26:53,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2066 [2020-10-14 22:26:53,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:53,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:26:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:26:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 22:26:53,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 22:26:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:53,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:53,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:53,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:53,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:26:53,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:53,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:26:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:53,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:53,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:54,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:54,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:54,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:26:54,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:26:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-14 22:26:54,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:54,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:26:54,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:54,228 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:26:54,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985838915] [2020-10-14 22:26:54,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:26:54,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:26:54,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144343889] [2020-10-14 22:26:54,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:26:54,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:54,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:26:54,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:54,232 INFO L87 Difference]: Start difference. First operand 4640 states and 6009 transitions. Second operand 7 states. [2020-10-14 22:27:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:09,344 INFO L93 Difference]: Finished difference Result 10635 states and 14361 transitions. [2020-10-14 22:27:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:27:09,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-14 22:27:09,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:09,373 INFO L225 Difference]: With dead ends: 10635 [2020-10-14 22:27:09,373 INFO L226 Difference]: Without dead ends: 5557 [2020-10-14 22:27:09,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:27:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2020-10-14 22:27:09,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 5104. [2020-10-14 22:27:09,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5104 states. [2020-10-14 22:27:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 6276 transitions. [2020-10-14 22:27:09,535 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 6276 transitions. Word has length 135 [2020-10-14 22:27:09,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:09,537 INFO L479 AbstractCegarLoop]: Abstraction has 5104 states and 6276 transitions. [2020-10-14 22:27:09,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:27:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 6276 transitions. [2020-10-14 22:27:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 22:27:09,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:09,544 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:27:09,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:27:09,544 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:09,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1675491827, now seen corresponding path program 1 times [2020-10-14 22:27:09,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:09,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024569794] [2020-10-14 22:27:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:10,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:10,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 22:27:10,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:27:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-10-14 22:27:10,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:10,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:10,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:27:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:27:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:10,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:10,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:10,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:10,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:10,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:27:10,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:10,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:27:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:27:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:10,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:10,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:10,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:10,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:27:10,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 22:27:10,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:10,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:27:10,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:27:10,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:27:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:10,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:10,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:27:10,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:10,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 22:27:10,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:10,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:27:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:27:11,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024569794] [2020-10-14 22:27:11,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:11,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:27:11,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404282166] [2020-10-14 22:27:11,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:27:11,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:11,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:27:11,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:27:11,008 INFO L87 Difference]: Start difference. First operand 5104 states and 6276 transitions. Second operand 7 states. [2020-10-14 22:27:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:23,766 INFO L93 Difference]: Finished difference Result 12068 states and 15636 transitions. [2020-10-14 22:27:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:27:23,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-10-14 22:27:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:23,802 INFO L225 Difference]: With dead ends: 12068 [2020-10-14 22:27:23,803 INFO L226 Difference]: Without dead ends: 7403 [2020-10-14 22:27:23,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:27:23,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7403 states. [2020-10-14 22:27:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7403 to 7377. [2020-10-14 22:27:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7377 states. [2020-10-14 22:27:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 9151 transitions. [2020-10-14 22:27:24,017 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 9151 transitions. Word has length 199 [2020-10-14 22:27:24,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:24,018 INFO L479 AbstractCegarLoop]: Abstraction has 7377 states and 9151 transitions. [2020-10-14 22:27:24,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:27:24,018 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 9151 transitions. [2020-10-14 22:27:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 22:27:24,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:24,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:27:24,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:27:24,022 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:24,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:24,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1309783215, now seen corresponding path program 1 times [2020-10-14 22:27:24,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:24,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077399355] [2020-10-14 22:27:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:26,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:27,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:27,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 22:27:27,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:27:27,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3063 [2020-10-14 22:27:27,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:27,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:27:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:27:27,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:27,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:27,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:27,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:27:27,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:27,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:27,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:27,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:27,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:27,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:27:27,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:27,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 22:27:27,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:27,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:27:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:27:27,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:27:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:27,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:27,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:27,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:27:27,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 22:27:27,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:27,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:27:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 68 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:27:27,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077399355] [2020-10-14 22:27:27,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:27,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:27:27,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729212018] [2020-10-14 22:27:27,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:27:27,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:27,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:27:27,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:27:27,983 INFO L87 Difference]: Start difference. First operand 7377 states and 9151 transitions. Second operand 10 states. [2020-10-14 22:27:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:58,185 INFO L93 Difference]: Finished difference Result 20653 states and 26301 transitions. [2020-10-14 22:27:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 22:27:58,187 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2020-10-14 22:27:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:58,239 INFO L225 Difference]: With dead ends: 20653 [2020-10-14 22:27:58,239 INFO L226 Difference]: Without dead ends: 13715 [2020-10-14 22:27:58,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 22:27:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13715 states. [2020-10-14 22:27:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13715 to 12599. [2020-10-14 22:27:58,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12599 states. [2020-10-14 22:27:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12599 states to 12599 states and 15881 transitions. [2020-10-14 22:27:58,542 INFO L78 Accepts]: Start accepts. Automaton has 12599 states and 15881 transitions. Word has length 201 [2020-10-14 22:27:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:58,544 INFO L479 AbstractCegarLoop]: Abstraction has 12599 states and 15881 transitions. [2020-10-14 22:27:58,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:27:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 12599 states and 15881 transitions. [2020-10-14 22:27:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-14 22:27:58,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:58,550 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 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] [2020-10-14 22:27:58,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:27:58,550 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:58,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:58,551 INFO L82 PathProgramCache]: Analyzing trace with hash 101892322, now seen corresponding path program 1 times [2020-10-14 22:27:58,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:58,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765908873] [2020-10-14 22:27:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:59,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:59,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 22:27:59,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:27:59,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1330 [2020-10-14 22:27:59,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:59,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:27:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:27:59,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:00,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:00,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:00,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:28:00,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:00,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:00,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:00,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:00,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:00,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:00,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:28:00,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:00,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:00,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:00,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:00,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:00,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:00,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:00,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:00,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:00,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:28:00,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:28:00,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:00,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:28:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:00,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:28:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:00,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:00,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:00,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:28:00,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:00,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 22:28:00,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:00,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:28:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 22:28:00,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765908873] [2020-10-14 22:28:00,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:00,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:00,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382462852] [2020-10-14 22:28:00,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:00,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:00,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:00,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:00,650 INFO L87 Difference]: Start difference. First operand 12599 states and 15881 transitions. Second operand 7 states. [2020-10-14 22:28:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:20,755 INFO L93 Difference]: Finished difference Result 30899 states and 40151 transitions. [2020-10-14 22:28:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:28:20,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-14 22:28:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:20,832 INFO L225 Difference]: With dead ends: 30899 [2020-10-14 22:28:20,832 INFO L226 Difference]: Without dead ends: 18273 [2020-10-14 22:28:20,859 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 [2020-10-14 22:28:20,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18273 states. [2020-10-14 22:28:21,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18273 to 15467. [2020-10-14 22:28:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15467 states. [2020-10-14 22:28:21,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15467 states to 15467 states and 20364 transitions. [2020-10-14 22:28:21,187 INFO L78 Accepts]: Start accepts. Automaton has 15467 states and 20364 transitions. Word has length 283 [2020-10-14 22:28:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:21,187 INFO L479 AbstractCegarLoop]: Abstraction has 15467 states and 20364 transitions. [2020-10-14 22:28:21,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 15467 states and 20364 transitions. [2020-10-14 22:28:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-14 22:28:21,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:21,194 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:28:21,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:28:21,195 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:21,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:21,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1447546444, now seen corresponding path program 1 times [2020-10-14 22:28:21,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:21,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042894084] [2020-10-14 22:28:21,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:22,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:26,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:26,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 22:28:26,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:28:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 22:28:26,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:26,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:28:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:28:26,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:28:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:26,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:26,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:26,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:28:26,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:26,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:26,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:26,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:26,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:26,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:26,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:26,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 22:28:26,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:26,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:28:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:26,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:26,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:26,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:28:26,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 22:28:26,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:26,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:28:26,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:27,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:28:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:27,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:27,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:27,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:28:27,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:27,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 22:28:27,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:27,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:28:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 184 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:28:27,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042894084] [2020-10-14 22:28:27,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:27,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:27,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740525366] [2020-10-14 22:28:27,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:27,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:27,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:27,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:27,586 INFO L87 Difference]: Start difference. First operand 15467 states and 20364 transitions. Second operand 7 states. [2020-10-14 22:28:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:44,095 INFO L93 Difference]: Finished difference Result 33311 states and 43796 transitions. [2020-10-14 22:28:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:28:44,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-14 22:28:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:44,158 INFO L225 Difference]: With dead ends: 33311 [2020-10-14 22:28:44,158 INFO L226 Difference]: Without dead ends: 18283 [2020-10-14 22:28:44,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:28:44,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18283 states. [2020-10-14 22:28:44,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18283 to 17732. [2020-10-14 22:28:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17732 states. [2020-10-14 22:28:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17732 states to 17732 states and 23031 transitions. [2020-10-14 22:28:44,528 INFO L78 Accepts]: Start accepts. Automaton has 17732 states and 23031 transitions. Word has length 306 [2020-10-14 22:28:44,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:44,529 INFO L479 AbstractCegarLoop]: Abstraction has 17732 states and 23031 transitions. [2020-10-14 22:28:44,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:44,529 INFO L276 IsEmpty]: Start isEmpty. Operand 17732 states and 23031 transitions. [2020-10-14 22:28:44,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-14 22:28:44,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:44,541 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:28:44,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:28:44,542 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:44,542 INFO L82 PathProgramCache]: Analyzing trace with hash 937359354, now seen corresponding path program 1 times [2020-10-14 22:28:44,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:44,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900745715] [2020-10-14 22:28:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:44,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:46,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:49,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:49,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-14 22:28:49,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:28:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 22:28:49,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:49,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-14 22:28:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 22:28:49,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:49,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:49,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:49,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:49,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:28:49,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:49,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:49,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:49,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:49,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:49,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:49,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:49,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:49,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 22:28:49,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:49,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:49,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:49,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:49,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:49,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:49,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:50,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:50,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:28:50,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:50,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 22:28:50,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:50,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:50,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:28:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:28:50,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 22:28:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:50,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:50,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 22:28:50,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:50,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 22:28:50,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:50,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 22:28:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 22:28:50,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900745715] [2020-10-14 22:28:50,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:50,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:50,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843224383] [2020-10-14 22:28:50,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:50,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:50,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:50,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:50,434 INFO L87 Difference]: Start difference. First operand 17732 states and 23031 transitions. Second operand 7 states. [2020-10-14 22:29:12,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:12,986 INFO L93 Difference]: Finished difference Result 37567 states and 50604 transitions. [2020-10-14 22:29:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:29:12,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-14 22:29:12,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:13,054 INFO L225 Difference]: With dead ends: 37567 [2020-10-14 22:29:13,055 INFO L226 Difference]: Without dead ends: 23854 [2020-10-14 22:29:13,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:29:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23854 states. [2020-10-14 22:29:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23854 to 22340. [2020-10-14 22:29:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22340 states. [2020-10-14 22:29:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22340 states to 22340 states and 29425 transitions. [2020-10-14 22:29:13,496 INFO L78 Accepts]: Start accepts. Automaton has 22340 states and 29425 transitions. Word has length 345 [2020-10-14 22:29:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:13,497 INFO L479 AbstractCegarLoop]: Abstraction has 22340 states and 29425 transitions. [2020-10-14 22:29:13,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:29:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 22340 states and 29425 transitions. [2020-10-14 22:29:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-14 22:29:13,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:13,509 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:29:13,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:29:13,510 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:13,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:13,510 INFO L82 PathProgramCache]: Analyzing trace with hash 294091836, now seen corresponding path program 1 times [2020-10-14 22:29:13,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:13,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077346955] [2020-10-14 22:29:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:13,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:13,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:14,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:17,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:17,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-14 22:29:17,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3488 [2020-10-14 22:29:17,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:17,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:29:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:29:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 342 [2020-10-14 22:29:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:17,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:17,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:17,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:17,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:17,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:29:17,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:17,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:29:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:17,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:17,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:17,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:17,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 22:29:17,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:17,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:29:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:29:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:17,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:17,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:17,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:17,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:29:17,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:17,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 22:29:17,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:17,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:29:17,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:17,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:29:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:17,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:17,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 22:29:17,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:17,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 22:29:17,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:17,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:17,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:17,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 22:29:17,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 257 proven. 12 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:29:17,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077346955] [2020-10-14 22:29:17,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:17,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:29:17,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621549349] [2020-10-14 22:29:17,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:29:17,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:17,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:29:17,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:29:17,974 INFO L87 Difference]: Start difference. First operand 22340 states and 29425 transitions. Second operand 10 states. [2020-10-14 22:29:45,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:45,269 INFO L93 Difference]: Finished difference Result 56392 states and 83519 transitions. [2020-10-14 22:29:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:29:45,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 371 [2020-10-14 22:29:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:45,441 INFO L225 Difference]: With dead ends: 56392 [2020-10-14 22:29:45,441 INFO L226 Difference]: Without dead ends: 34491 [2020-10-14 22:29:45,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-14 22:29:45,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34491 states. [2020-10-14 22:29:46,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34491 to 33013. [2020-10-14 22:29:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33013 states. [2020-10-14 22:29:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33013 states to 33013 states and 41667 transitions. [2020-10-14 22:29:46,307 INFO L78 Accepts]: Start accepts. Automaton has 33013 states and 41667 transitions. Word has length 371 [2020-10-14 22:29:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:46,308 INFO L479 AbstractCegarLoop]: Abstraction has 33013 states and 41667 transitions. [2020-10-14 22:29:46,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:29:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 33013 states and 41667 transitions. [2020-10-14 22:29:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-14 22:29:46,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:46,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:29:46,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:29:46,319 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:46,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1379841410, now seen corresponding path program 1 times [2020-10-14 22:29:46,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:46,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472244847] [2020-10-14 22:29:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:47,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:48,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:48,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-14 22:29:48,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:29:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2367 [2020-10-14 22:29:48,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:48,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:29:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:29:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 392 [2020-10-14 22:29:48,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:48,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:48,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:48,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:48,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:29:48,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:48,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:29:48,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:48,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:49,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:49,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 22:29:49,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-14 22:29:49,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:49,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:29:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-14 22:29:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:29:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:49,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:49,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:49,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 22:29:49,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 22:29:49,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:49,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:29:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 22:29:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:29:50,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472244847] [2020-10-14 22:29:50,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:50,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:29:50,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566787515] [2020-10-14 22:29:50,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:29:50,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:50,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:29:50,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:29:50,222 INFO L87 Difference]: Start difference. First operand 33013 states and 41667 transitions. Second operand 9 states.