/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:33,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:33,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:33,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:33,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:33,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:33,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:33,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:33,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:33,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:33,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:33,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:33,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:33,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:33,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:33,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:33,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:33,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:33,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:33,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:33,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:33,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:33,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:33,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:33,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:33,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:33,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:33,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:33,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:33,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:33,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:33,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:33,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:33,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:33,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:33,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:33,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:33,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:33,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:33,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:33,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:33,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:12:33,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:33,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:33,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:33,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:33,268 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:33,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:33,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:33,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:33,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:33,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:33,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:33,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:33,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:33,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:33,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:33,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:33,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:33,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:33,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:33,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:33,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:33,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:33,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:33,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:33,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:33,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:33,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:33,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:33,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:33,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:12:33,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:33,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:33,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:33,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:33,786 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:33,787 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 10:12:33,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25b929ab0/4ec2442c390249ea84a8a4fd8539baf2/FLAG190b2a8ce [2020-09-25 10:12:34,539 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:34,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 10:12:34,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25b929ab0/4ec2442c390249ea84a8a4fd8539baf2/FLAG190b2a8ce [2020-09-25 10:12:34,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25b929ab0/4ec2442c390249ea84a8a4fd8539baf2 [2020-09-25 10:12:34,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:34,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:34,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:34,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:34,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:34,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:34" (1/1) ... [2020-09-25 10:12:34,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3705ef2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34, skipping insertion in model container [2020-09-25 10:12:34,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:34" (1/1) ... [2020-09-25 10:12:34,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:34,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:35,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:35,486 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:35,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:35,604 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:35,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35 WrapperNode [2020-09-25 10:12:35,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:35,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:35,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:35,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:35,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35" (1/1) ... [2020-09-25 10:12:35,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35" (1/1) ... [2020-09-25 10:12:35,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35" (1/1) ... [2020-09-25 10:12:35,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35" (1/1) ... [2020-09-25 10:12:35,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35" (1/1) ... [2020-09-25 10:12:35,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35" (1/1) ... [2020-09-25 10:12:35,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35" (1/1) ... [2020-09-25 10:12:35,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:35,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:35,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:35,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:35,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:35,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:37,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:37,358 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:37,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:37 BoogieIcfgContainer [2020-09-25 10:12:37,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:37,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:37,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:37,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:37,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:34" (1/3) ... [2020-09-25 10:12:37,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31398288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:37, skipping insertion in model container [2020-09-25 10:12:37,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35" (2/3) ... [2020-09-25 10:12:37,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31398288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:37, skipping insertion in model container [2020-09-25 10:12:37,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:37" (3/3) ... [2020-09-25 10:12:37,377 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-25 10:12:37,389 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:37,400 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:37,425 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:37,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:37,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:37,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:37,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:37,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:37,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:37,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:37,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 10:12:37,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:37,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:37,505 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-25 10:12:37,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:37,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732017845] [2020-09-25 10:12:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:38,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:38,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:38,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-09-25 10:12:38,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:38,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 10:12:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:38,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:38,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:38,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:12:38,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:38,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:38,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:38,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732017845] [2020-09-25 10:12:38,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:38,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:12:38,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126214471] [2020-09-25 10:12:38,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:12:38,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:38,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:12:38,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:12:38,895 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:12:40,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:40,867 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 10:12:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:12:40,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-25 10:12:40,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:40,901 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 10:12:40,901 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 10:12:40,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:40,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 10:12:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 10:12:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 10:12:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 10:12:41,009 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-25 10:12:41,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:41,010 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 10:12:41,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:12:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 10:12:41,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:12:41,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:41,022 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:41,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:41,022 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:41,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-25 10:12:41,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:41,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090360576] [2020-09-25 10:12:41,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:41,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:43,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 10:12:43,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2244 [2020-09-25 10:12:43,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:43,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:12:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 10:12:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:43,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:43,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:43,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:43,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:12:43,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:43,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:12:43,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:43,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:43,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:43,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:12:43,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:43,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 10:12:43,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:43,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:12:43,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:43,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090360576] [2020-09-25 10:12:43,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:43,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:12:43,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341998504] [2020-09-25 10:12:43,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:12:43,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:43,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:12:43,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:12:43,787 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-25 10:12:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:45,853 INFO L93 Difference]: Finished difference Result 1437 states and 1858 transitions. [2020-09-25 10:12:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:12:45,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 10:12:45,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:45,863 INFO L225 Difference]: With dead ends: 1437 [2020-09-25 10:12:45,863 INFO L226 Difference]: Without dead ends: 909 [2020-09-25 10:12:45,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-09-25 10:12:45,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 859. [2020-09-25 10:12:45,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-09-25 10:12:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1029 transitions. [2020-09-25 10:12:45,960 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1029 transitions. Word has length 156 [2020-09-25 10:12:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:45,961 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1029 transitions. [2020-09-25 10:12:45,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:12:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1029 transitions. [2020-09-25 10:12:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 10:12:45,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:45,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:45,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:45,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:45,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:45,967 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-25 10:12:45,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:45,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827839918] [2020-09-25 10:12:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:46,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:48,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:51,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:51,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 10:12:51,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:51,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:12:51,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:51,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 10:12:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:51,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:51,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:51,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:51,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:51,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:12:51,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:51,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:51,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:51,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:51,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:51,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:51,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 10:12:51,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:51,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:51,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827839918] [2020-09-25 10:12:51,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:51,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:12:51,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009717035] [2020-09-25 10:12:51,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:12:51,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:51,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:12:51,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:51,592 INFO L87 Difference]: Start difference. First operand 859 states and 1029 transitions. Second operand 8 states. [2020-09-25 10:12:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:55,117 INFO L93 Difference]: Finished difference Result 2960 states and 3753 transitions. [2020-09-25 10:12:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:55,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 10:12:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:55,137 INFO L225 Difference]: With dead ends: 2960 [2020-09-25 10:12:55,137 INFO L226 Difference]: Without dead ends: 2116 [2020-09-25 10:12:55,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:55,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2020-09-25 10:12:55,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1995. [2020-09-25 10:12:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-09-25 10:12:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2467 transitions. [2020-09-25 10:12:55,268 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2467 transitions. Word has length 165 [2020-09-25 10:12:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:55,276 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2467 transitions. [2020-09-25 10:12:55,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2467 transitions. [2020-09-25 10:12:55,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 10:12:55,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:55,287 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:12:55,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:55,288 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash -892390744, now seen corresponding path program 1 times [2020-09-25 10:12:55,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:55,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058794714] [2020-09-25 10:12:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:59,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 10:12:59,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:12:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4235 [2020-09-25 10:12:59,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:59,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:12:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-09-25 10:12:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:59,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:59,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:12:59,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:59,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:59,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:59,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:59,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:59,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:59,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 10:12:59,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:59,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:59,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:59,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:59,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:12:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:00,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:00,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:13:00,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:00,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 10:13:00,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:00,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:13:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 171 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:13:00,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058794714] [2020-09-25 10:13:00,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:00,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:13:00,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308537305] [2020-09-25 10:13:00,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:13:00,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:00,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:13:00,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:13:00,430 INFO L87 Difference]: Start difference. First operand 1995 states and 2467 transitions. Second operand 9 states. [2020-09-25 10:13:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:04,135 INFO L93 Difference]: Finished difference Result 5213 states and 6691 transitions. [2020-09-25 10:13:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:13:04,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2020-09-25 10:13:04,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:04,158 INFO L225 Difference]: With dead ends: 5213 [2020-09-25 10:13:04,159 INFO L226 Difference]: Without dead ends: 3233 [2020-09-25 10:13:04,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:13:04,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2020-09-25 10:13:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3140. [2020-09-25 10:13:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2020-09-25 10:13:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 3951 transitions. [2020-09-25 10:13:04,278 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 3951 transitions. Word has length 235 [2020-09-25 10:13:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:04,280 INFO L479 AbstractCegarLoop]: Abstraction has 3140 states and 3951 transitions. [2020-09-25 10:13:04,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:13:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 3951 transitions. [2020-09-25 10:13:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 10:13:04,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:04,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:04,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:04,289 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:04,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:04,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1938914842, now seen corresponding path program 1 times [2020-09-25 10:13:04,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:04,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057262634] [2020-09-25 10:13:04,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:05,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 10:13:09,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:13:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:13:09,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 10:13:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:09,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:13:09,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:09,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:09,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 10:13:09,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:13:09,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 10:13:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:10,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:10,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:13:10,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-25 10:13:10,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:10,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:13:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 121 proven. 4 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 10:13:10,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057262634] [2020-09-25 10:13:10,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:10,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:13:10,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877928388] [2020-09-25 10:13:10,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:13:10,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:10,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:13:10,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:10,331 INFO L87 Difference]: Start difference. First operand 3140 states and 3951 transitions. Second operand 10 states. [2020-09-25 10:13:13,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:13,579 INFO L93 Difference]: Finished difference Result 7112 states and 9256 transitions. [2020-09-25 10:13:13,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:13:13,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 248 [2020-09-25 10:13:13,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:13,603 INFO L225 Difference]: With dead ends: 7112 [2020-09-25 10:13:13,603 INFO L226 Difference]: Without dead ends: 4099 [2020-09-25 10:13:13,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:13:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2020-09-25 10:13:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 3897. [2020-09-25 10:13:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3897 states. [2020-09-25 10:13:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 4853 transitions. [2020-09-25 10:13:13,734 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 4853 transitions. Word has length 248 [2020-09-25 10:13:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:13,735 INFO L479 AbstractCegarLoop]: Abstraction has 3897 states and 4853 transitions. [2020-09-25 10:13:13,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:13:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 4853 transitions. [2020-09-25 10:13:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 10:13:13,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:13,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:13,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:13,743 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:13,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1668169033, now seen corresponding path program 1 times [2020-09-25 10:13:13,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:13,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101592775] [2020-09-25 10:13:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:18,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:18,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 10:13:18,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:13:18,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 10:13:18,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:18,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:18,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:18,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:18,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-09-25 10:13:18,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:18,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:18,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:18,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:18,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:18,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:13:18,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:18,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:18,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:19,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:19,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:19,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 10:13:19,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:19,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 10:13:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:19,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 10:13:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:19,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:13:19,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:19,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-09-25 10:13:19,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:19,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 10:13:19,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101592775] [2020-09-25 10:13:19,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:19,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:13:19,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098479932] [2020-09-25 10:13:19,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:13:19,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:19,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:13:19,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:19,966 INFO L87 Difference]: Start difference. First operand 3897 states and 4853 transitions. Second operand 10 states.