/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=0.5 --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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:56,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:56,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:56,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:56,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:56,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:56,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:56,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:56,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:56,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:56,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:56,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:56,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:56,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:56,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:56,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:56,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:56,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:56,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:56,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:56,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:56,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:56,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:56,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:56,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:56,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:56,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:56,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:56,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:56,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:56,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:56,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:56,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:56,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:56,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:56,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:56,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:56,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:56,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:56,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:56,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:56,487 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 14:41:56,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:56,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:56,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:56,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:56,540 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:56,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:56,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:56,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:56,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:56,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:56,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:56,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:56,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:56,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:56,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:56,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:56,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:56,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:56,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:56,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:56,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:56,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:56,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:56,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:56,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:56,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:56,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:56,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:56,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:56,551 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:41:57,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:57,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:57,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:57,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:57,048 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:57,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-25 14:41:57,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20c8c371f/d45d400baa7e430d9ccd785796ca55d6/FLAG6643701d1 [2020-09-25 14:41:57,794 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:57,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-25 14:41:57,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20c8c371f/d45d400baa7e430d9ccd785796ca55d6/FLAG6643701d1 [2020-09-25 14:41:58,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20c8c371f/d45d400baa7e430d9ccd785796ca55d6 [2020-09-25 14:41:58,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:58,045 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:58,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:58,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:58,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:58,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:58" (1/1) ... [2020-09-25 14:41:58,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fc4f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58, skipping insertion in model container [2020-09-25 14:41:58,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:58" (1/1) ... [2020-09-25 14:41:58,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:58,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:58,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:58,704 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:58,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:58,831 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:58,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58 WrapperNode [2020-09-25 14:41:58,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:58,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:58,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:58,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:58,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58" (1/1) ... [2020-09-25 14:41:58,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58" (1/1) ... [2020-09-25 14:41:58,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58" (1/1) ... [2020-09-25 14:41:58,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58" (1/1) ... [2020-09-25 14:41:58,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58" (1/1) ... [2020-09-25 14:41:58,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58" (1/1) ... [2020-09-25 14:41:58,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58" (1/1) ... [2020-09-25 14:41:58,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:58,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:58,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:58,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:58,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58" (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 14:41:59,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:59,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:59,058 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:59,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:59,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:59,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:59,061 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:59,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:59,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:59,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:00,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:00,593 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:00,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:00 BoogieIcfgContainer [2020-09-25 14:42:00,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:00,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:00,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:00,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:00,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:58" (1/3) ... [2020-09-25 14:42:00,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ada508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:00, skipping insertion in model container [2020-09-25 14:42:00,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:58" (2/3) ... [2020-09-25 14:42:00,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ada508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:00, skipping insertion in model container [2020-09-25 14:42:00,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:00" (3/3) ... [2020-09-25 14:42:00,614 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label22.c [2020-09-25 14:42:00,627 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:00,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:00,663 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:00,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:00,698 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:00,698 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:00,698 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:00,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:00,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:00,699 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:00,699 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 14:42:00,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:00,746 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] [2020-09-25 14:42:00,747 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:00,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:00,755 INFO L82 PathProgramCache]: Analyzing trace with hash 382162911, now seen corresponding path program 1 times [2020-09-25 14:42:00,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:00,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506965962] [2020-09-25 14:42:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:01,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:01,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:01,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:01,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:42:01,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:01,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-09-25 14:42:01,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:01,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 14:42:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:42:02,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:02,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:02,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:02,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:02,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:42:02,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:02,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:02,183 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 14:42:02,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506965962] [2020-09-25 14:42:02,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:02,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:42:02,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817284075] [2020-09-25 14:42:02,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:42:02,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:02,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:42:02,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:42:02,218 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:04,334 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 14:42:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:04,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-25 14:42:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:04,362 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 14:42:04,362 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 14:42:04,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 14:42:04,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 14:42:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 14:42:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 14:42:04,469 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 56 [2020-09-25 14:42:04,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:04,470 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 14:42:04,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 14:42:04,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 14:42:04,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:04,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:04,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:04,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:04,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:04,485 INFO L82 PathProgramCache]: Analyzing trace with hash -701735608, now seen corresponding path program 1 times [2020-09-25 14:42:04,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:04,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124330144] [2020-09-25 14:42:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:04,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:05,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:06,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 14:42:06,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2178 [2020-09-25 14:42:06,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:06,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:06,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:06,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:06,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:06,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:06,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:06,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:06,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:42:06,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:06,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:06,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:07,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:07,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 14:42:07,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:07,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:07,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:07,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:07,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124330144] [2020-09-25 14:42:07,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:07,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:07,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400747132] [2020-09-25 14:42:07,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:07,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:07,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:07,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:07,190 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 14:42:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:09,807 INFO L93 Difference]: Finished difference Result 1439 states and 1858 transitions. [2020-09-25 14:42:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:09,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-09-25 14:42:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:09,817 INFO L225 Difference]: With dead ends: 1439 [2020-09-25 14:42:09,818 INFO L226 Difference]: Without dead ends: 911 [2020-09-25 14:42:09,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:09,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-09-25 14:42:09,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 859. [2020-09-25 14:42:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-09-25 14:42:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1032 transitions. [2020-09-25 14:42:09,878 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1032 transitions. Word has length 136 [2020-09-25 14:42:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:09,879 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1032 transitions. [2020-09-25 14:42:09,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:09,880 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1032 transitions. [2020-09-25 14:42:09,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 14:42:09,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:09,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:09,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:09,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:09,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:09,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1690817075, now seen corresponding path program 1 times [2020-09-25 14:42:09,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:09,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810555333] [2020-09-25 14:42:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:12,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:12,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 14:42:12,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3024 [2020-09-25 14:42:12,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:12,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:42:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:12,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 14:42:12,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:13,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:13,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:13,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:13,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 14:42:13,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:13,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:42:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:13,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-25 14:42:13,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:13,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:42:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:13,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810555333] [2020-09-25 14:42:13,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:13,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:42:13,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278971696] [2020-09-25 14:42:13,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:42:13,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:13,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:42:13,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:13,726 INFO L87 Difference]: Start difference. First operand 859 states and 1032 transitions. Second operand 12 states. [2020-09-25 14:42:16,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:16,796 INFO L93 Difference]: Finished difference Result 1945 states and 2368 transitions. [2020-09-25 14:42:16,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:42:16,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2020-09-25 14:42:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:16,808 INFO L225 Difference]: With dead ends: 1945 [2020-09-25 14:42:16,809 INFO L226 Difference]: Without dead ends: 1073 [2020-09-25 14:42:16,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:42:16,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2020-09-25 14:42:16,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1017. [2020-09-25 14:42:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-09-25 14:42:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1201 transitions. [2020-09-25 14:42:16,877 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1201 transitions. Word has length 145 [2020-09-25 14:42:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:16,878 INFO L479 AbstractCegarLoop]: Abstraction has 1017 states and 1201 transitions. [2020-09-25 14:42:16,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:42:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1201 transitions. [2020-09-25 14:42:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 14:42:16,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:16,894 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, 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] [2020-09-25 14:42:16,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:16,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:16,895 INFO L82 PathProgramCache]: Analyzing trace with hash 227833048, now seen corresponding path program 1 times [2020-09-25 14:42:16,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:16,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755574605] [2020-09-25 14:42:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:20,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 14:42:20,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4006 [2020-09-25 14:42:20,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:20,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:20,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:20,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:42:20,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 14:42:20,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:21,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:21,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:21,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:42:21,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:21,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:21,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:21,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:21,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 14:42:21,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:21,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:42:21,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:21,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:21,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:21,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 14:42:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:21,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:21,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 109 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:42:21,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755574605] [2020-09-25 14:42:21,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:21,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:42:21,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484684944] [2020-09-25 14:42:21,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:42:21,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:21,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:42:21,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:42:21,499 INFO L87 Difference]: Start difference. First operand 1017 states and 1201 transitions. Second operand 6 states. [2020-09-25 14:42:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:23,667 INFO L93 Difference]: Finished difference Result 2199 states and 2749 transitions. [2020-09-25 14:42:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:42:23,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2020-09-25 14:42:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:23,681 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 14:42:23,681 INFO L226 Difference]: Without dead ends: 1347 [2020-09-25 14:42:23,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 14:42:23,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-09-25 14:42:23,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1181. [2020-09-25 14:42:23,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-09-25 14:42:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1413 transitions. [2020-09-25 14:42:23,735 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1413 transitions. Word has length 215 [2020-09-25 14:42:23,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:23,737 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1413 transitions. [2020-09-25 14:42:23,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:42:23,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1413 transitions. [2020-09-25 14:42:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 14:42:23,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:23,742 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, 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 14:42:23,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:23,743 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:23,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1867328357, now seen corresponding path program 1 times [2020-09-25 14:42:23,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:23,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282779220] [2020-09-25 14:42:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:28,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 14:42:28,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:42:28,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:42:28,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:28,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:42:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:42:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:42:28,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:29,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:29,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:42:29,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:29,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:29,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:29,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:29,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:29,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:29,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 14:42:29,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:29,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:42:29,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:29,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:29,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:29,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:42:29,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-25 14:42:29,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:29,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 88 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:42:29,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282779220] [2020-09-25 14:42:29,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:29,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:42:29,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540902855] [2020-09-25 14:42:29,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:42:29,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:42:29,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:42:29,827 INFO L87 Difference]: Start difference. First operand 1181 states and 1413 transitions. Second operand 9 states. [2020-09-25 14:42:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:34,671 INFO L93 Difference]: Finished difference Result 2870 states and 3643 transitions. [2020-09-25 14:42:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:42:34,676 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 227 [2020-09-25 14:42:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:34,686 INFO L225 Difference]: With dead ends: 2870 [2020-09-25 14:42:34,686 INFO L226 Difference]: Without dead ends: 1828 [2020-09-25 14:42:34,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:42:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-09-25 14:42:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1793. [2020-09-25 14:42:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2020-09-25 14:42:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2137 transitions. [2020-09-25 14:42:34,742 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2137 transitions. Word has length 227 [2020-09-25 14:42:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:34,742 INFO L479 AbstractCegarLoop]: Abstraction has 1793 states and 2137 transitions. [2020-09-25 14:42:34,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:42:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2137 transitions. [2020-09-25 14:42:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 14:42:34,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:34,748 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:34,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:34,748 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash -698588225, now seen corresponding path program 1 times [2020-09-25 14:42:34,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:34,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829585009] [2020-09-25 14:42:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:35,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:38,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 14:42:38,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:42:38,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3362 [2020-09-25 14:42:38,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:38,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:38,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:42:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:42:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 14:42:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:38,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:38,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:38,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:38,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:42:38,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:38,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:38,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:38,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:38,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:38,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:38,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 14:42:38,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:38,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:42:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:39,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:39,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 14:42:39,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-09-25 14:42:39,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:39,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 14:42:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 88 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:42:39,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829585009] [2020-09-25 14:42:39,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:39,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:42:39,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157830061] [2020-09-25 14:42:39,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:42:39,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:39,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:42:39,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:42:39,342 INFO L87 Difference]: Start difference. First operand 1793 states and 2137 transitions. Second operand 9 states. [2020-09-25 14:42:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:43,658 INFO L93 Difference]: Finished difference Result 4082 states and 5039 transitions. [2020-09-25 14:42:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:43,662 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 257 [2020-09-25 14:42:43,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:43,674 INFO L225 Difference]: With dead ends: 4082 [2020-09-25 14:42:43,675 INFO L226 Difference]: Without dead ends: 2425 [2020-09-25 14:42:43,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:42:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-09-25 14:42:43,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2400. [2020-09-25 14:42:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2400 states. [2020-09-25 14:42:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2858 transitions. [2020-09-25 14:42:43,750 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2858 transitions. Word has length 257 [2020-09-25 14:42:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:43,751 INFO L479 AbstractCegarLoop]: Abstraction has 2400 states and 2858 transitions. [2020-09-25 14:42:43,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:42:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2858 transitions. [2020-09-25 14:42:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 14:42:43,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:43,757 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:43,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:42:43,757 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:43,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:43,758 INFO L82 PathProgramCache]: Analyzing trace with hash 132214309, now seen corresponding path program 1 times [2020-09-25 14:42:43,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:43,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773787782] [2020-09-25 14:42:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:43,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:44,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:44,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:45,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 14:42:45,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-09-25 14:42:45,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:45,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:45,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-09-25 14:42:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 14:42:45,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:42:45,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:45,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:45,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:42:45,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:45,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:45,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:45,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 14:42:45,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:45,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 14:42:45,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:45,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 14:42:45,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:45,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 14:42:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:45,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:45,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:45,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:45,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 14:42:45,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:45,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:42:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 14:42:45,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773787782] [2020-09-25 14:42:45,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:46,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:42:46,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895455432] [2020-09-25 14:42:46,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:42:46,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:46,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:42:46,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:46,003 INFO L87 Difference]: Start difference. First operand 2400 states and 2858 transitions. Second operand 5 states.