/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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:38,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:38,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:38,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:38,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:38,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:38,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:38,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:38,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:38,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:38,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:38,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:38,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:38,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:38,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:38,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:38,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:38,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:38,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:38,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:38,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:38,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:38,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:38,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:38,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:38,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:38,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:38,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:38,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:38,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:38,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:38,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:38,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:38,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:38,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:38,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:38,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:38,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:38,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:38,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:38,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:38,884 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 10:11:38,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:38,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:38,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:38,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:38,946 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:38,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:38,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:38,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:38,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:38,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:38,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:38,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:38,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:38,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:38,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:38,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:38,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:38,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:38,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:38,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:38,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:38,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:38,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:38,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:38,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:38,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:38,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:38,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:38,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:38,956 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 10:11:39,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:39,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:39,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:39,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:39,471 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:39,472 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 10:11:39,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16b06294c/b42d0fd297d34168b32fbd94cbb3e175/FLAGb71db93be [2020-09-25 10:11:40,246 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:40,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 10:11:40,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16b06294c/b42d0fd297d34168b32fbd94cbb3e175/FLAGb71db93be [2020-09-25 10:11:40,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16b06294c/b42d0fd297d34168b32fbd94cbb3e175 [2020-09-25 10:11:40,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:40,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:40,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:40,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:40,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:40,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:40" (1/1) ... [2020-09-25 10:11:40,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478ac3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:40, skipping insertion in model container [2020-09-25 10:11:40,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:40" (1/1) ... [2020-09-25 10:11:40,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:40,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:41,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:41,132 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:41,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:41,367 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:41,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:41 WrapperNode [2020-09-25 10:11:41,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:41,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:41,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:41,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:41,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:41" (1/1) ... [2020-09-25 10:11:41,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:41" (1/1) ... [2020-09-25 10:11:41,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:41" (1/1) ... [2020-09-25 10:11:41,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:41" (1/1) ... [2020-09-25 10:11:41,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:41" (1/1) ... [2020-09-25 10:11:41,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:41" (1/1) ... [2020-09-25 10:11:41,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:41" (1/1) ... [2020-09-25 10:11:41,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:41,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:41,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:41,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:41,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:41,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:41,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:41,573 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:41,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:43,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:43,088 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:43,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:43 BoogieIcfgContainer [2020-09-25 10:11:43,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:43,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:43,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:43,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:43,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:40" (1/3) ... [2020-09-25 10:11:43,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ff4807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:43, skipping insertion in model container [2020-09-25 10:11:43,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:41" (2/3) ... [2020-09-25 10:11:43,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ff4807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:43, skipping insertion in model container [2020-09-25 10:11:43,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:43" (3/3) ... [2020-09-25 10:11:43,107 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-09-25 10:11:43,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:43,131 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:43,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:43,191 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:43,192 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:43,192 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:43,192 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:43,192 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:43,192 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:43,193 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:43,193 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:43,225 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:43,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 10:11:43,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:43,236 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] [2020-09-25 10:11:43,237 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:43,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:43,244 INFO L82 PathProgramCache]: Analyzing trace with hash -796596049, now seen corresponding path program 1 times [2020-09-25 10:11:43,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:43,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346264750] [2020-09-25 10:11:43,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:44,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 10:11:44,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:11:44,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-25 10:11:44,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:44,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:11:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:11:44,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:44,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:44,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:11:44,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:44,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:44,353 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 10:11:44,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346264750] [2020-09-25 10:11:44,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:44,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:11:44,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432925956] [2020-09-25 10:11:44,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:11:44,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:44,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:11:44,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:11:44,389 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:11:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:46,539 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 10:11:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:46,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-25 10:11:46,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:46,567 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 10:11:46,567 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 10:11:46,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:11:46,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 10:11:46,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 10:11:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 10:11:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 10:11:46,675 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 49 [2020-09-25 10:11:46,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:46,676 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 10:11:46,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 10:11:46,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 10:11:46,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:46,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:46,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:46,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:46,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:46,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1427265920, now seen corresponding path program 1 times [2020-09-25 10:11:46,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:46,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392783276] [2020-09-25 10:11:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:46,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:51,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 10:11:51,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:11:51,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:51,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 10:11:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:51,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:51,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:51,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:11:51,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:51,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:51,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:51,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:51,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:52,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:52,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:52,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:52,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 10:11:52,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:52,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:11:52,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:52,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392783276] [2020-09-25 10:11:52,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:52,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:11:52,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914431481] [2020-09-25 10:11:52,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:11:52,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:52,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:11:52,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:52,175 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 10:11:54,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:54,097 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 10:11:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:11:54,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-09-25 10:11:54,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:54,104 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 10:11:54,104 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 10:11:54,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 10:11:54,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 10:11:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 10:11:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 10:11:54,144 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 128 [2020-09-25 10:11:54,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:54,145 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 10:11:54,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:11:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 10:11:54,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 10:11:54,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:54,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:54,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:54,153 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:54,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:54,153 INFO L82 PathProgramCache]: Analyzing trace with hash -863517790, now seen corresponding path program 1 times [2020-09-25 10:11:54,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:54,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888142875] [2020-09-25 10:11:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:54,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:59,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 10:11:59,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:59,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:11:59,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:59,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:59,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:59,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:59,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 10:11:59,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:59,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:59,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:11:59,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:59,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:59,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:59,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:59,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:59,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 10:11:59,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:59,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:59,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888142875] [2020-09-25 10:11:59,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:59,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:59,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968439749] [2020-09-25 10:11:59,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:59,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:59,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:59,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:59,628 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 10:12:02,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:02,802 INFO L93 Difference]: Finished difference Result 1627 states and 2055 transitions. [2020-09-25 10:12:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:02,803 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-09-25 10:12:02,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:02,814 INFO L225 Difference]: With dead ends: 1627 [2020-09-25 10:12:02,814 INFO L226 Difference]: Without dead ends: 1097 [2020-09-25 10:12:02,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2020-09-25 10:12:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1046. [2020-09-25 10:12:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 10:12:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1273 transitions. [2020-09-25 10:12:02,880 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1273 transitions. Word has length 138 [2020-09-25 10:12:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:02,883 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1273 transitions. [2020-09-25 10:12:02,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1273 transitions. [2020-09-25 10:12:02,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 10:12:02,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:02,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:02,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:02,900 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:02,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1456961498, now seen corresponding path program 1 times [2020-09-25 10:12:02,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:02,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508255976] [2020-09-25 10:12:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:04,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:05,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 10:12:05,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2582 [2020-09-25 10:12:05,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:05,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 10:12:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:05,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:05,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:05,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:05,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:12:05,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:05,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:05,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:05,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:05,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 10:12:05,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:05,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 10:12:05,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:05,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:12:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:05,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508255976] [2020-09-25 10:12:05,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:05,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:12:05,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992383192] [2020-09-25 10:12:05,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:12:05,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:05,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:12:05,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:05,948 INFO L87 Difference]: Start difference. First operand 1046 states and 1273 transitions. Second operand 8 states. [2020-09-25 10:12:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:09,383 INFO L93 Difference]: Finished difference Result 2340 states and 3045 transitions. [2020-09-25 10:12:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:12:09,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-09-25 10:12:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:09,397 INFO L225 Difference]: With dead ends: 2340 [2020-09-25 10:12:09,397 INFO L226 Difference]: Without dead ends: 1800 [2020-09-25 10:12:09,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:12:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2020-09-25 10:12:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1701. [2020-09-25 10:12:09,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-09-25 10:12:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2114 transitions. [2020-09-25 10:12:09,473 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2114 transitions. Word has length 140 [2020-09-25 10:12:09,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:09,473 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2114 transitions. [2020-09-25 10:12:09,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2114 transitions. [2020-09-25 10:12:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 10:12:09,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:09,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:09,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:09,482 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:09,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1274196626, now seen corresponding path program 1 times [2020-09-25 10:12:09,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:09,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890124285] [2020-09-25 10:12:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:13,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:13,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 10:12:13,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4129 [2020-09-25 10:12:13,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:13,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:12:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 10:12:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:13,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:13,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:13,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:13,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:13,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:13,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:12:13,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:13,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:13,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:13,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:14,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:14,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 10:12:14,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:14,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-09-25 10:12:14,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:14,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:12:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 10:12:14,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:14,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890124285] [2020-09-25 10:12:14,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:14,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:12:14,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220388439] [2020-09-25 10:12:14,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:12:14,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:14,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:12:14,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:12:14,721 INFO L87 Difference]: Start difference. First operand 1701 states and 2114 transitions. Second operand 12 states. [2020-09-25 10:12:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:19,376 INFO L93 Difference]: Finished difference Result 3305 states and 4218 transitions. [2020-09-25 10:12:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:12:19,380 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2020-09-25 10:12:19,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:19,394 INFO L225 Difference]: With dead ends: 3305 [2020-09-25 10:12:19,394 INFO L226 Difference]: Without dead ends: 2088 [2020-09-25 10:12:19,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:12:19,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2020-09-25 10:12:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2023. [2020-09-25 10:12:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2023 states. [2020-09-25 10:12:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2576 transitions. [2020-09-25 10:12:19,481 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2576 transitions. Word has length 157 [2020-09-25 10:12:19,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:19,482 INFO L479 AbstractCegarLoop]: Abstraction has 2023 states and 2576 transitions. [2020-09-25 10:12:19,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:12:19,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2576 transitions. [2020-09-25 10:12:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 10:12:19,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:19,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:19,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:19,486 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:19,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:19,487 INFO L82 PathProgramCache]: Analyzing trace with hash 319070558, now seen corresponding path program 1 times [2020-09-25 10:12:19,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:19,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280440650] [2020-09-25 10:12:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:19,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:23,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:23,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 10:12:23,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:23,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4017 [2020-09-25 10:12:23,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:23,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:23,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 10:12:23,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:23,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:23,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:23,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:23,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:12:23,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:23,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:23,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:23,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:24,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:12:24,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:24,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-25 10:12:24,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:24,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 10:12:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:24,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280440650] [2020-09-25 10:12:24,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:24,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:12:24,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581174505] [2020-09-25 10:12:24,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:12:24,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:24,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:12:24,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:12:24,371 INFO L87 Difference]: Start difference. First operand 2023 states and 2576 transitions. Second operand 9 states. [2020-09-25 10:12:28,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:28,034 INFO L93 Difference]: Finished difference Result 4665 states and 6061 transitions. [2020-09-25 10:12:28,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:12:28,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 10:12:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:28,051 INFO L225 Difference]: With dead ends: 4665 [2020-09-25 10:12:28,052 INFO L226 Difference]: Without dead ends: 3109 [2020-09-25 10:12:28,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:28,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2020-09-25 10:12:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 2933. [2020-09-25 10:12:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2933 states. [2020-09-25 10:12:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 3659 transitions. [2020-09-25 10:12:28,148 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 3659 transitions. Word has length 171 [2020-09-25 10:12:28,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:28,149 INFO L479 AbstractCegarLoop]: Abstraction has 2933 states and 3659 transitions. [2020-09-25 10:12:28,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:12:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 3659 transitions. [2020-09-25 10:12:28,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 10:12:28,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:28,155 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, 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] [2020-09-25 10:12:28,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:12:28,155 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:28,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:28,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2078590991, now seen corresponding path program 1 times [2020-09-25 10:12:28,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:28,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679087278] [2020-09-25 10:12:28,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:28,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking...