/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=0.2 --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/Problem02_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:15:39,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:15:39,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:15:39,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:15:39,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:15:39,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:15:39,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:15:39,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:15:39,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:15:39,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:15:39,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:15:39,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:15:39,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:15:39,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:15:39,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:15:39,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:15:39,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:15:39,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:15:39,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:15:39,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:15:39,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:15:39,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:15:39,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:15:39,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:15:39,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:15:39,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:15:39,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:15:39,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:15:39,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:15:39,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:15:39,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:15:39,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:15:39,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:15:39,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:15:39,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:15:39,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:15:39,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:15:39,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:15:39,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:15:39,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:15:39,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:15:39,693 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 11:15:39,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:15:39,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:15:39,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:15:39,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:15:39,743 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:15:39,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:15:39,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:15:39,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:15:39,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:15:39,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:15:39,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:15:39,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:15:39,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:15:39,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:15:39,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:15:39,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:15:39,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:15:39,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:15:39,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:15:39,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:15:39,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:15:39,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:15:39,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:15:39,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:15:39,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:15:39,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:15:39,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:15:39,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:15:39,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:15:39,750 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:15:40,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:15:40,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:15:40,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:15:40,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:15:40,264 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:15:40,265 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label12.c [2020-09-25 11:15:40,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4e6c0fed/195a4fe37b4a4b7aa102e05d74f14a13/FLAGe561f07e1 [2020-09-25 11:15:41,036 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:15:41,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label12.c [2020-09-25 11:15:41,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4e6c0fed/195a4fe37b4a4b7aa102e05d74f14a13/FLAGe561f07e1 [2020-09-25 11:15:41,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4e6c0fed/195a4fe37b4a4b7aa102e05d74f14a13 [2020-09-25 11:15:41,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:15:41,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:15:41,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:41,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:15:41,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:15:41,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:41" (1/1) ... [2020-09-25 11:15:41,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:41, skipping insertion in model container [2020-09-25 11:15:41,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:41" (1/1) ... [2020-09-25 11:15:41,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:15:41,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:15:41,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:41,955 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:15:42,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:42,068 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:15:42,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:42 WrapperNode [2020-09-25 11:15:42,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:42,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:15:42,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:15:42,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:15:42,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:42" (1/1) ... [2020-09-25 11:15:42,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:42" (1/1) ... [2020-09-25 11:15:42,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:42" (1/1) ... [2020-09-25 11:15:42,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:42" (1/1) ... [2020-09-25 11:15:42,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:42" (1/1) ... [2020-09-25 11:15:42,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:42" (1/1) ... [2020-09-25 11:15:42,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:42" (1/1) ... [2020-09-25 11:15:42,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:15:42,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:15:42,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:15:42,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:15:42,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:42" (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 11:15:42,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:15:42,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:15:42,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:15:42,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:15:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:15:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:15:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:15:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:15:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:15:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:15:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:15:43,792 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:15:43,792 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:15:43,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:43 BoogieIcfgContainer [2020-09-25 11:15:43,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:15:43,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:15:43,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:15:43,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:15:43,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:15:41" (1/3) ... [2020-09-25 11:15:43,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe8f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:43, skipping insertion in model container [2020-09-25 11:15:43,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:42" (2/3) ... [2020-09-25 11:15:43,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe8f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:43, skipping insertion in model container [2020-09-25 11:15:43,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:43" (3/3) ... [2020-09-25 11:15:43,813 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label12.c [2020-09-25 11:15:43,826 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:15:43,839 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:15:43,866 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:15:43,908 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:15:43,908 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:15:43,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:15:43,909 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:15:43,909 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:15:43,909 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:15:43,909 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:15:43,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:15:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:15:43,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 11:15:43,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:43,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:43,970 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:43,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:43,980 INFO L82 PathProgramCache]: Analyzing trace with hash 463353353, now seen corresponding path program 1 times [2020-09-25 11:15:43,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:43,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235266026] [2020-09-25 11:15:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:44,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:46,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:47,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:49,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:49,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 11:15:49,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:15:49,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 11:15:49,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:49,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:15:49,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:15:49,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:15:49,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:49,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:49,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:49,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:49,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:15:49,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:49,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:15:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:49,640 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 11:15:49,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235266026] [2020-09-25 11:15:49,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:15:49,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:15:49,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231723196] [2020-09-25 11:15:49,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:15:49,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:49,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:15:49,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:15:49,678 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:15:51,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:51,965 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 11:15:51,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:15:51,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 11:15:51,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:51,992 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 11:15:51,993 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 11:15:52,003 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 11:15:52,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 11:15:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 11:15:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 11:15:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 11:15:52,108 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 144 [2020-09-25 11:15:52,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:52,110 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 11:15:52,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:15:52,110 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 11:15:52,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 11:15:52,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:52,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:52,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:15:52,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:52,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:52,120 INFO L82 PathProgramCache]: Analyzing trace with hash -278646622, now seen corresponding path program 1 times [2020-09-25 11:15:52,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:52,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072454742] [2020-09-25 11:15:52,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:52,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:55,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:55,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:56,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:57,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 11:15:57,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:15:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:15:57,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:57,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 11:15:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 11:15:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:57,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:57,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:15:57,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:57,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:57,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:57,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:57,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:57,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:57,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:15:57,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:15:57,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:57,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:15:57,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:57,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072454742] [2020-09-25 11:15:57,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:57,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:15:57,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185900977] [2020-09-25 11:15:57,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:57,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:57,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:57,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:57,408 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-25 11:15:59,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:59,786 INFO L93 Difference]: Finished difference Result 1546 states and 2048 transitions. [2020-09-25 11:15:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:59,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 11:15:59,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:59,796 INFO L225 Difference]: With dead ends: 1546 [2020-09-25 11:15:59,796 INFO L226 Difference]: Without dead ends: 955 [2020-09-25 11:15:59,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:15:59,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-25 11:15:59,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 919. [2020-09-25 11:15:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-09-25 11:15:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1119 transitions. [2020-09-25 11:15:59,844 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1119 transitions. Word has length 170 [2020-09-25 11:15:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:59,845 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1119 transitions. [2020-09-25 11:15:59,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1119 transitions. [2020-09-25 11:15:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 11:15:59,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:59,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:59,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:15:59,851 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:59,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:59,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1919685948, now seen corresponding path program 1 times [2020-09-25 11:15:59,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:59,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964465806] [2020-09-25 11:15:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:04,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:04,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 11:16:04,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:16:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 11:16:04,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:04,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 11:16:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 11:16:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:16:05,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:05,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:05,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:05,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:05,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:05,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:16:05,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:05,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:05,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:05,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:05,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:05,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:16:05,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:16:05,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:05,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:16:05,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:05,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964465806] [2020-09-25 11:16:05,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:05,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:16:05,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677887554] [2020-09-25 11:16:05,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:16:05,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:05,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:16:05,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:16:05,211 INFO L87 Difference]: Start difference. First operand 919 states and 1119 transitions. Second operand 5 states. [2020-09-25 11:16:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:07,357 INFO L93 Difference]: Finished difference Result 2154 states and 2766 transitions. [2020-09-25 11:16:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:16:07,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 11:16:07,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:07,370 INFO L225 Difference]: With dead ends: 2154 [2020-09-25 11:16:07,370 INFO L226 Difference]: Without dead ends: 1257 [2020-09-25 11:16:07,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:16:07,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2020-09-25 11:16:07,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1225. [2020-09-25 11:16:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-09-25 11:16:07,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1494 transitions. [2020-09-25 11:16:07,469 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1494 transitions. Word has length 178 [2020-09-25 11:16:07,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:07,470 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1494 transitions. [2020-09-25 11:16:07,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:16:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1494 transitions. [2020-09-25 11:16:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 11:16:07,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:07,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:07,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:16:07,485 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:07,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:07,486 INFO L82 PathProgramCache]: Analyzing trace with hash 24597841, now seen corresponding path program 1 times [2020-09-25 11:16:07,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:07,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132527836] [2020-09-25 11:16:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:07,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:08,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:08,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:08,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:09,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:12,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:12,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 11:16:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:16:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:16:12,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:12,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 11:16:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 11:16:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:16:12,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:12,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:12,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:12,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:12,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:12,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:16:12,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:12,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:12,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:12,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:12,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:12,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:12,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:12,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:12,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:16:12,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:12,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 11:16:12,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:12,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:12,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:12,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 11:16:12,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:12,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132527836] [2020-09-25 11:16:12,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:12,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:16:12,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891538763] [2020-09-25 11:16:12,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:16:12,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:12,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:16:12,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:16:12,840 INFO L87 Difference]: Start difference. First operand 1225 states and 1494 transitions. Second operand 5 states. [2020-09-25 11:16:15,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:15,007 INFO L93 Difference]: Finished difference Result 2786 states and 3538 transitions. [2020-09-25 11:16:15,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:16:15,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 11:16:15,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:15,018 INFO L225 Difference]: With dead ends: 2786 [2020-09-25 11:16:15,018 INFO L226 Difference]: Without dead ends: 1583 [2020-09-25 11:16:15,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:16:15,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-09-25 11:16:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1382. [2020-09-25 11:16:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2020-09-25 11:16:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1679 transitions. [2020-09-25 11:16:15,080 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1679 transitions. Word has length 182 [2020-09-25 11:16:15,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:15,081 INFO L479 AbstractCegarLoop]: Abstraction has 1382 states and 1679 transitions. [2020-09-25 11:16:15,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:16:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1679 transitions. [2020-09-25 11:16:15,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 11:16:15,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:15,093 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:15,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:16:15,094 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:15,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:15,094 INFO L82 PathProgramCache]: Analyzing trace with hash -846588559, now seen corresponding path program 1 times [2020-09-25 11:16:15,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:15,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383970729] [2020-09-25 11:16:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:15,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:15,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:20,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:20,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 11:16:20,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:16:20,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:16:20,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:20,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:20,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:16:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 11:16:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 11:16:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:20,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:20,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:20,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:20,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:20,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:20,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:16:20,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:20,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:20,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:20,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:20,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:20,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:20,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:20,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:20,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:20,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:16:20,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:20,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:20,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:20,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 11:16:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:20,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:20,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:16:20,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:20,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 11:16:20,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:20,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:16:20,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:20,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:16:20,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 11:16:20,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383970729] [2020-09-25 11:16:20,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:20,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:16:20,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411088833] [2020-09-25 11:16:20,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:16:20,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:20,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:16:20,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:16:20,698 INFO L87 Difference]: Start difference. First operand 1382 states and 1679 transitions. Second operand 8 states. [2020-09-25 11:16:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:23,629 INFO L93 Difference]: Finished difference Result 3002 states and 3782 transitions. [2020-09-25 11:16:23,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:16:23,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-09-25 11:16:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:23,640 INFO L225 Difference]: With dead ends: 3002 [2020-09-25 11:16:23,641 INFO L226 Difference]: Without dead ends: 1544 [2020-09-25 11:16:23,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:16:23,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2020-09-25 11:16:23,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1528. [2020-09-25 11:16:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1528 states. [2020-09-25 11:16:23,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1837 transitions. [2020-09-25 11:16:23,700 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1837 transitions. Word has length 213 [2020-09-25 11:16:23,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:23,701 INFO L479 AbstractCegarLoop]: Abstraction has 1528 states and 1837 transitions. [2020-09-25 11:16:23,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:16:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1837 transitions. [2020-09-25 11:16:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 11:16:23,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:23,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:23,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:16:23,709 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:23,710 INFO L82 PathProgramCache]: Analyzing trace with hash -15613156, now seen corresponding path program 1 times [2020-09-25 11:16:23,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:23,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519208393] [2020-09-25 11:16:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:23,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:23,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:25,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:26,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:28,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:28,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 11:16:28,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:16:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:16:28,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:28,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:16:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:16:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-09-25 11:16:28,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0