/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/Problem10_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:29,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:29,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:29,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:29,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:29,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:29,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:29,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:29,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:29,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:29,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:29,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:29,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:29,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:29,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:29,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:29,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:29,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:29,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:29,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:29,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:29,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:29,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:29,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:29,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:29,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:29,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:29,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:29,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:29,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:29,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:29,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:29,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:29,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:29,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:29,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:29,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:29,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:29,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:29,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:29,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:29,685 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 11:18:29,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:29,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:29,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:29,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:29,725 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:29,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:29,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:29,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:29,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:29,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:29,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:29,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:29,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:29,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:29,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:29,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:29,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:29,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:29,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:29,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:29,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:29,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:29,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:29,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:29,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:29,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:29,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:29,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:29,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:29,730 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 11:18:30,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:30,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:30,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:30,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:30,204 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:30,205 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 11:18:30,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e8dc0974/fa885d03bfc64956b6a80e218ae0b9a1/FLAGfc668f4db [2020-09-25 11:18:30,949 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:30,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 11:18:30,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e8dc0974/fa885d03bfc64956b6a80e218ae0b9a1/FLAGfc668f4db [2020-09-25 11:18:31,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e8dc0974/fa885d03bfc64956b6a80e218ae0b9a1 [2020-09-25 11:18:31,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:31,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:31,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:31,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:31,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:31,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:31" (1/1) ... [2020-09-25 11:18:31,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:31, skipping insertion in model container [2020-09-25 11:18:31,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:31" (1/1) ... [2020-09-25 11:18:31,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:31,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:31,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:31,804 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:32,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:32,049 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:32,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:32 WrapperNode [2020-09-25 11:18:32,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:32,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:32,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:32,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:32,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:32" (1/1) ... [2020-09-25 11:18:32,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:32" (1/1) ... [2020-09-25 11:18:32,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:32" (1/1) ... [2020-09-25 11:18:32,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:32" (1/1) ... [2020-09-25 11:18:32,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:32" (1/1) ... [2020-09-25 11:18:32,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:32" (1/1) ... [2020-09-25 11:18:32,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:32" (1/1) ... [2020-09-25 11:18:32,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:32,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:32,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:32,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:32,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:32" (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 11:18:32,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:32,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:32,278 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:32,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:33,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:33,862 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:33,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:33 BoogieIcfgContainer [2020-09-25 11:18:33,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:33,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:33,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:33,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:33,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:31" (1/3) ... [2020-09-25 11:18:33,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:33, skipping insertion in model container [2020-09-25 11:18:33,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:32" (2/3) ... [2020-09-25 11:18:33,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:33, skipping insertion in model container [2020-09-25 11:18:33,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:33" (3/3) ... [2020-09-25 11:18:33,883 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2020-09-25 11:18:33,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:33,909 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:33,932 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:33,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:33,970 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:33,970 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:33,970 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:33,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:33,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:33,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:33,971 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 11:18:34,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:34,018 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] [2020-09-25 11:18:34,018 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:34,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:34,027 INFO L82 PathProgramCache]: Analyzing trace with hash -938747945, now seen corresponding path program 1 times [2020-09-25 11:18:34,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:34,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 11:18:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:35,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:18:35,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:35,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-09-25 11:18:35,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:35,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:35,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 11:18:35,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:18:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:35,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:35,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:35,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:18:35,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:35,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:35,350 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 11:18:35,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 11:18:35,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:35,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:18:35,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739470649] [2020-09-25 11:18:35,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:35,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:35,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:35,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:35,384 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 11:18:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:38,051 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 11:18:38,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:18:38,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-09-25 11:18:38,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:38,093 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 11:18:38,093 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 11:18:38,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 11:18:38,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 11:18:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:18:38,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 11:18:38,222 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 59 [2020-09-25 11:18:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:38,223 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 11:18:38,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 11:18:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 11:18:38,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:38,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:38,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:38,239 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:38,240 INFO L82 PathProgramCache]: Analyzing trace with hash -899949441, now seen corresponding path program 1 times [2020-09-25 11:18:38,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:38,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267057560] [2020-09-25 11:18:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:38,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:43,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 11:18:43,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 11:18:43,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:43,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:18:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 11:18:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:43,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:43,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:43,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:43,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:18:43,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:43,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:43,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:43,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:18:43,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:43,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:43,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 11:18:43,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 11:18:43,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:43,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:18:43,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:44,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267057560] [2020-09-25 11:18:44,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:44,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:18:44,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840841664] [2020-09-25 11:18:44,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:18:44,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:44,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:18:44,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:44,157 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 11:18:46,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:46,390 INFO L93 Difference]: Finished difference Result 1877 states and 2614 transitions. [2020-09-25 11:18:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:18:46,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-25 11:18:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:46,399 INFO L225 Difference]: With dead ends: 1877 [2020-09-25 11:18:46,399 INFO L226 Difference]: Without dead ends: 1197 [2020-09-25 11:18:46,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:18:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2020-09-25 11:18:46,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 701. [2020-09-25 11:18:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-09-25 11:18:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 878 transitions. [2020-09-25 11:18:46,450 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 878 transitions. Word has length 188 [2020-09-25 11:18:46,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:46,451 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 878 transitions. [2020-09-25 11:18:46,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:18:46,451 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 878 transitions. [2020-09-25 11:18:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-25 11:18:46,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:46,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:18:46,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:46,464 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:46,465 INFO L82 PathProgramCache]: Analyzing trace with hash -779241874, now seen corresponding path program 1 times [2020-09-25 11:18:46,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:46,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163157922] [2020-09-25 11:18:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:47,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-25 11:18:51,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:18:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:18:51,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:18:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-25 11:18:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:51,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:51,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:18:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:51,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:51,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:18:51,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 11:18:51,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:51,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:51,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:18:51,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:51,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:18:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:51,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:52,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 11:18:52,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 11:18:52,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:52,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 11:18:52,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 87 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 11:18:52,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163157922] [2020-09-25 11:18:52,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:52,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:52,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053647714] [2020-09-25 11:18:52,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:52,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:52,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:52,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:52,849 INFO L87 Difference]: Start difference. First operand 701 states and 878 transitions. Second operand 10 states. [2020-09-25 11:18:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:55,709 INFO L93 Difference]: Finished difference Result 1916 states and 2485 transitions. [2020-09-25 11:18:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:18:55,714 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 267 [2020-09-25 11:18:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:55,723 INFO L225 Difference]: With dead ends: 1916 [2020-09-25 11:18:55,723 INFO L226 Difference]: Without dead ends: 1206 [2020-09-25 11:18:55,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:18:55,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-09-25 11:18:55,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1160. [2020-09-25 11:18:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2020-09-25 11:18:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1405 transitions. [2020-09-25 11:18:55,785 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1405 transitions. Word has length 267 [2020-09-25 11:18:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:55,786 INFO L479 AbstractCegarLoop]: Abstraction has 1160 states and 1405 transitions. [2020-09-25 11:18:55,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:18:55,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1405 transitions. [2020-09-25 11:18:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-25 11:18:55,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:55,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:18:55,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:55,795 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:55,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:55,795 INFO L82 PathProgramCache]: Analyzing trace with hash 266332152, now seen corresponding path program 1 times [2020-09-25 11:18:55,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:55,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665305096] [2020-09-25 11:18:55,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:57,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:00,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-09-25 11:19:00,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:19:00,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:00,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-09-25 11:19:00,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:00,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:00,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:00,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:00,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:00,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:19:00,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:00,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:00,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:00,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:01,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:01,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:01,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 11:19:01,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:01,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:19:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:01,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:01,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:19:01,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:01,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 11:19:01,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:01,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:19:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:19:01,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665305096] [2020-09-25 11:19:01,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:01,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:19:01,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362619550] [2020-09-25 11:19:01,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:01,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:01,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:01,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:01,546 INFO L87 Difference]: Start difference. First operand 1160 states and 1405 transitions. Second operand 7 states. [2020-09-25 11:19:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:03,626 INFO L93 Difference]: Finished difference Result 2977 states and 3750 transitions. [2020-09-25 11:19:03,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:03,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-09-25 11:19:03,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:03,641 INFO L225 Difference]: With dead ends: 2977 [2020-09-25 11:19:03,641 INFO L226 Difference]: Without dead ends: 1832 [2020-09-25 11:19:03,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 11:19:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2020-09-25 11:19:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1786. [2020-09-25 11:19:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2020-09-25 11:19:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2184 transitions. [2020-09-25 11:19:03,725 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2184 transitions. Word has length 273 [2020-09-25 11:19:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:03,725 INFO L479 AbstractCegarLoop]: Abstraction has 1786 states and 2184 transitions. [2020-09-25 11:19:03,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:03,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2184 transitions. [2020-09-25 11:19:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-09-25 11:19:03,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:03,734 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:03,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:03,735 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:03,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:03,735 INFO L82 PathProgramCache]: Analyzing trace with hash 463482390, now seen corresponding path program 1 times [2020-09-25 11:19:03,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:03,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470730795] [2020-09-25 11:19:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:03,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:08,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-09-25 11:19:08,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:19:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:19:08,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:08,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 11:19:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 11:19:08,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:08,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:08,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:19:08,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:08,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:08,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:08,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:08,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:08,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:09,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:09,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:09,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:09,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 11:19:09,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:09,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:19:09,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:19:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:09,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:09,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:19:09,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 11:19:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:09,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:09,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:09,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:09,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:19:09,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:19:09,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470730795] [2020-09-25 11:19:09,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:09,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:19:09,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728185680] [2020-09-25 11:19:09,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:09,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:09,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:09,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:09,670 INFO L87 Difference]: Start difference. First operand 1786 states and 2184 transitions. Second operand 7 states. [2020-09-25 11:19:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:12,132 INFO L93 Difference]: Finished difference Result 3759 states and 4727 transitions. [2020-09-25 11:19:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:19:12,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-09-25 11:19:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:12,147 INFO L225 Difference]: With dead ends: 3759 [2020-09-25 11:19:12,148 INFO L226 Difference]: Without dead ends: 1792 [2020-09-25 11:19:12,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:19:12,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-09-25 11:19:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1748. [2020-09-25 11:19:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2020-09-25 11:19:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2094 transitions. [2020-09-25 11:19:12,215 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2094 transitions. Word has length 283 [2020-09-25 11:19:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:12,216 INFO L479 AbstractCegarLoop]: Abstraction has 1748 states and 2094 transitions. [2020-09-25 11:19:12,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2094 transitions. [2020-09-25 11:19:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-09-25 11:19:12,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:12,226 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:19:12,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:12,227 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:12,227 INFO L82 PathProgramCache]: Analyzing trace with hash -503106334, now seen corresponding path program 1 times [2020-09-25 11:19:12,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:12,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971770923] [2020-09-25 11:19:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:17,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-09-25 11:19:17,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:19:17,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:17,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:19:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-09-25 11:19:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:17,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:17,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:17,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:17,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:17,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:19:17,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:17,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:17,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:17,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:17,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:17,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 11:19:17,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:17,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:19:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:17,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking...