/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:21,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:21,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:21,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:21,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:21,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:21,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:21,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:21,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:21,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:21,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:21,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:21,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:21,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:21,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:21,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:21,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:21,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:21,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:21,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:21,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:21,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:21,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:21,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:21,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:21,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:21,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:21,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:21,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:21,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:21,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:21,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:21,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:21,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:21,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:21,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:21,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:21,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:21,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:21,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:21,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:21,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:40:21,422 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:21,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:21,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:21,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:21,424 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:21,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:21,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:21,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:21,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:21,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:21,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:21,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:21,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:21,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:21,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:21,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:21,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:21,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:21,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:21,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:21,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:21,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:21,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:21,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:21,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:21,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:21,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:21,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:21,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:21,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:40:21,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:21,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:21,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:21,938 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:21,940 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:21,941 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 14:40:22,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c4d1035/1968092b2cf244ce8736d69acf76a6d9/FLAG463b8b34f [2020-09-25 14:40:22,704 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:22,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 14:40:22,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c4d1035/1968092b2cf244ce8736d69acf76a6d9/FLAG463b8b34f [2020-09-25 14:40:22,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c4d1035/1968092b2cf244ce8736d69acf76a6d9 [2020-09-25 14:40:22,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:22,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:22,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:22,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:23,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:23,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:22" (1/1) ... [2020-09-25 14:40:23,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23, skipping insertion in model container [2020-09-25 14:40:23,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:22" (1/1) ... [2020-09-25 14:40:23,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:23,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:23,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:23,578 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:23,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:23,838 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:23,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23 WrapperNode [2020-09-25 14:40:23,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:23,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:23,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:23,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:23,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23" (1/1) ... [2020-09-25 14:40:23,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23" (1/1) ... [2020-09-25 14:40:23,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23" (1/1) ... [2020-09-25 14:40:23,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23" (1/1) ... [2020-09-25 14:40:23,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23" (1/1) ... [2020-09-25 14:40:23,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23" (1/1) ... [2020-09-25 14:40:23,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23" (1/1) ... [2020-09-25 14:40:23,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:23,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:23,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:23,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:23,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:24,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:24,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:24,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:24,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:24,035 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:24,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:24,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:25,505 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:25,505 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:25,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:25 BoogieIcfgContainer [2020-09-25 14:40:25,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:25,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:25,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:25,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:25,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:22" (1/3) ... [2020-09-25 14:40:25,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b057aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:25, skipping insertion in model container [2020-09-25 14:40:25,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:23" (2/3) ... [2020-09-25 14:40:25,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b057aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:25, skipping insertion in model container [2020-09-25 14:40:25,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:25" (3/3) ... [2020-09-25 14:40:25,534 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2020-09-25 14:40:25,547 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:25,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:25,586 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:25,630 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:25,630 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:25,630 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:25,631 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:25,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:25,631 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:25,631 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:25,631 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:25,663 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 14:40:25,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:25,684 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] [2020-09-25 14:40:25,685 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:25,691 INFO L82 PathProgramCache]: Analyzing trace with hash -118135375, now seen corresponding path program 1 times [2020-09-25 14:40:25,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:25,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413272231] [2020-09-25 14:40:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:26,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:30,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 14:40:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:40:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:40:30,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:30,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:30,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:30,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:40:30,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 14:40:30,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:40:31,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:31,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:31,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:31,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:31,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 14:40:31,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:31,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:40:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:31,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413272231] [2020-09-25 14:40:31,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:31,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:40:31,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514461597] [2020-09-25 14:40:31,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:40:31,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:31,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:40:31,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:40:31,303 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:40:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:33,685 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 14:40:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:40:33,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 14:40:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:33,728 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 14:40:33,728 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 14:40:33,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 14:40:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 14:40:33,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 14:40:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 14:40:33,856 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 114 [2020-09-25 14:40:33,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:33,857 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 14:40:33,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:40:33,857 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 14:40:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 14:40:33,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:33,872 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:40:33,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:40:33,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:33,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:33,874 INFO L82 PathProgramCache]: Analyzing trace with hash 144430378, now seen corresponding path program 1 times [2020-09-25 14:40:33,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:33,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668272217] [2020-09-25 14:40:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:35,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:38,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:38,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 14:40:38,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:38,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 14:40:38,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:38,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:38,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 14:40:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:40:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:40:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:39,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:39,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:40:39,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:39,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:39,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:39,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:39,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:40:39,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:39,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:40:39,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:39,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:40:39,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:39,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668272217] [2020-09-25 14:40:39,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:39,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:39,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751827569] [2020-09-25 14:40:39,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:39,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:39,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:39,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:39,194 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 14:40:41,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:41,250 INFO L93 Difference]: Finished difference Result 1400 states and 1694 transitions. [2020-09-25 14:40:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:41,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-09-25 14:40:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:41,256 INFO L225 Difference]: With dead ends: 1400 [2020-09-25 14:40:41,256 INFO L226 Difference]: Without dead ends: 801 [2020-09-25 14:40:41,259 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 14:40:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-09-25 14:40:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2020-09-25 14:40:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-25 14:40:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 898 transitions. [2020-09-25 14:40:41,290 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 898 transitions. Word has length 131 [2020-09-25 14:40:41,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:41,291 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 898 transitions. [2020-09-25 14:40:41,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 898 transitions. [2020-09-25 14:40:41,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 14:40:41,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:41,295 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:40:41,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:40:41,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:41,296 INFO L82 PathProgramCache]: Analyzing trace with hash -889034989, now seen corresponding path program 1 times [2020-09-25 14:40:41,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:41,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288082343] [2020-09-25 14:40:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:41,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:41,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:42,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:46,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 14:40:46,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:40:46,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-09-25 14:40:46,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:46,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:40:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 14:40:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:46,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:46,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:46,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:40:46,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:46,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:46,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:46,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:40:46,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:40:46,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:46,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:40:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:46,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288082343] [2020-09-25 14:40:46,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:46,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:46,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967590096] [2020-09-25 14:40:46,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:46,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:46,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:46,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:46,671 INFO L87 Difference]: Start difference. First operand 776 states and 898 transitions. Second operand 5 states. [2020-09-25 14:40:48,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:48,855 INFO L93 Difference]: Finished difference Result 1709 states and 2048 transitions. [2020-09-25 14:40:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:48,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-25 14:40:48,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:48,872 INFO L225 Difference]: With dead ends: 1709 [2020-09-25 14:40:48,872 INFO L226 Difference]: Without dead ends: 955 [2020-09-25 14:40:48,877 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 14:40:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-25 14:40:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 929. [2020-09-25 14:40:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-09-25 14:40:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1073 transitions. [2020-09-25 14:40:48,925 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1073 transitions. Word has length 136 [2020-09-25 14:40:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:48,927 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1073 transitions. [2020-09-25 14:40:48,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1073 transitions. [2020-09-25 14:40:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 14:40:48,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:48,935 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:40:48,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:48,940 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:48,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:48,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1305788702, now seen corresponding path program 1 times [2020-09-25 14:40:48,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:48,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715844641] [2020-09-25 14:40:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:53,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 14:40:53,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:40:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:40:53,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:53,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 14:40:53,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 14:40:53,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:54,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:54,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:54,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:54,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:40:54,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:54,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:54,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:54,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:54,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:54,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 14:40:54,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:54,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:54,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:40:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:54,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715844641] [2020-09-25 14:40:54,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:54,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:54,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509810442] [2020-09-25 14:40:54,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:54,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:54,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:54,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:54,288 INFO L87 Difference]: Start difference. First operand 929 states and 1073 transitions. Second operand 5 states. [2020-09-25 14:40:56,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:56,253 INFO L93 Difference]: Finished difference Result 2449 states and 2916 transitions. [2020-09-25 14:40:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:56,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 14:40:56,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:56,268 INFO L225 Difference]: With dead ends: 2449 [2020-09-25 14:40:56,269 INFO L226 Difference]: Without dead ends: 1542 [2020-09-25 14:40:56,276 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 14:40:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2020-09-25 14:40:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1532. [2020-09-25 14:40:56,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1532 states. [2020-09-25 14:40:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 1812 transitions. [2020-09-25 14:40:56,340 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 1812 transitions. Word has length 143 [2020-09-25 14:40:56,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:56,341 INFO L479 AbstractCegarLoop]: Abstraction has 1532 states and 1812 transitions. [2020-09-25 14:40:56,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:56,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 1812 transitions. [2020-09-25 14:40:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 14:40:56,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:56,347 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:40:56,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:40:56,348 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:56,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1496133130, now seen corresponding path program 1 times [2020-09-25 14:40:56,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:56,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57389293] [2020-09-25 14:40:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:56,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:58,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:59,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 14:41:01,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:41:01,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 14:41:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:41:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:01,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:01,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:01,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:01,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:01,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:01,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:41:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:41:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:01,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:41:01,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:41:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:41:01,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57389293] [2020-09-25 14:41:01,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:01,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:01,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890108941] [2020-09-25 14:41:01,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:01,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:01,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:01,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:01,625 INFO L87 Difference]: Start difference. First operand 1532 states and 1812 transitions. Second operand 5 states. [2020-09-25 14:41:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:03,947 INFO L93 Difference]: Finished difference Result 4210 states and 5119 transitions. [2020-09-25 14:41:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:03,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 14:41:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:03,960 INFO L225 Difference]: With dead ends: 4210 [2020-09-25 14:41:03,960 INFO L226 Difference]: Without dead ends: 2700 [2020-09-25 14:41:03,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 14:41:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2020-09-25 14:41:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2454. [2020-09-25 14:41:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2454 states. [2020-09-25 14:41:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 2952 transitions. [2020-09-25 14:41:04,035 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 2952 transitions. Word has length 161 [2020-09-25 14:41:04,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:04,036 INFO L479 AbstractCegarLoop]: Abstraction has 2454 states and 2952 transitions. [2020-09-25 14:41:04,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 2952 transitions. [2020-09-25 14:41:04,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 14:41:04,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:04,045 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:04,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:41:04,046 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:04,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:04,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1711329584, now seen corresponding path program 1 times [2020-09-25 14:41:04,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:04,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112382845] [2020-09-25 14:41:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:04,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:09,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 14:41:09,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:09,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 14:41:09,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:09,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:09,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:41:09,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 14:41:09,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 14:41:09,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:09,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:09,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:09,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:09,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:09,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:41:09,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:09,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:09,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:09,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:09,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:09,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:09,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:41:09,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:09,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:41:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:09,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:41:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:09,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:09,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:09,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:09,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 14:41:09,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:09,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:41:09,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:09,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 14:41:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:09,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:41:09,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 14:41:09,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:09,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:09,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:09,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:41:09,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 29 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 14:41:09,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112382845] [2020-09-25 14:41:09,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:09,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:41:09,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235700895] [2020-09-25 14:41:09,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:09,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:09,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:09,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:09,530 INFO L87 Difference]: Start difference. First operand 2454 states and 2952 transitions. Second operand 8 states. [2020-09-25 14:41:12,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:12,690 INFO L93 Difference]: Finished difference Result 8135 states and 10402 transitions. [2020-09-25 14:41:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:12,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-09-25 14:41:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:12,730 INFO L225 Difference]: With dead ends: 8135 [2020-09-25 14:41:12,730 INFO L226 Difference]: Without dead ends: 5103 [2020-09-25 14:41:12,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:41:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2020-09-25 14:41:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 4421. [2020-09-25 14:41:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4421 states. [2020-09-25 14:41:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4421 states to 4421 states and 5457 transitions. [2020-09-25 14:41:12,915 INFO L78 Accepts]: Start accepts. Automaton has 4421 states and 5457 transitions. Word has length 199 [2020-09-25 14:41:12,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:12,915 INFO L479 AbstractCegarLoop]: Abstraction has 4421 states and 5457 transitions. [2020-09-25 14:41:12,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:12,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4421 states and 5457 transitions. [2020-09-25 14:41:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 14:41:12,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:12,944 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:41:12,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:41:12,945 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:12,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:12,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1588473300, now seen corresponding path program 1 times [2020-09-25 14:41:12,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:12,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484236821] [2020-09-25 14:41:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking...