/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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/Problem01_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:59,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:59,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:59,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:59,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:59,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:59,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:59,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:59,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:59,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:59,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:59,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:59,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:59,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:59,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:59,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:59,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:59,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:59,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:59,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:59,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:59,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:59,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:59,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:59,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:59,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:59,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:59,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:59,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:59,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:59,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:59,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:59,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:59,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:59,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:59,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:59,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:59,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:59,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:59,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:59,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:59,428 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 09:00:59,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:59,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:59,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:59,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:59,494 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:59,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:59,494 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:59,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:59,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:59,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:59,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:59,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:59,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:59,496 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:59,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:59,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:59,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:59,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:59,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:59,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:59,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:59,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:59,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:59,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:59,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:59,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:59,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:59,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:59,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:59,501 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:01:00,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:00,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:00,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:00,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:00,057 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:00,059 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 09:01:00,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a509f7f/e81fc799baf043389d5c3609c73834a6/FLAG5b0a63498 [2020-09-25 09:01:00,781 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:00,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 09:01:00,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a509f7f/e81fc799baf043389d5c3609c73834a6/FLAG5b0a63498 [2020-09-25 09:01:01,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a509f7f/e81fc799baf043389d5c3609c73834a6 [2020-09-25 09:01:01,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:01,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:01,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:01,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:01,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:01,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:01" (1/1) ... [2020-09-25 09:01:01,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01, skipping insertion in model container [2020-09-25 09:01:01,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:01" (1/1) ... [2020-09-25 09:01:01,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:01,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:01,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:01,658 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:02,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:02,045 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:02,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:02 WrapperNode [2020-09-25 09:01:02,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:02,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:02,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:02,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:02,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:02" (1/1) ... [2020-09-25 09:01:02,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:02" (1/1) ... [2020-09-25 09:01:02,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:02" (1/1) ... [2020-09-25 09:01:02,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:02" (1/1) ... [2020-09-25 09:01:02,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:02" (1/1) ... [2020-09-25 09:01:02,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:02" (1/1) ... [2020-09-25 09:01:02,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:02" (1/1) ... [2020-09-25 09:01:02,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:02,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:02,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:02,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:02,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:02" (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 09:01:02,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:03,820 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:03,820 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:03,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:03 BoogieIcfgContainer [2020-09-25 09:01:03,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:03,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:03,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:03,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:03,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:01" (1/3) ... [2020-09-25 09:01:03,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:03, skipping insertion in model container [2020-09-25 09:01:03,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:02" (2/3) ... [2020-09-25 09:01:03,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:03, skipping insertion in model container [2020-09-25 09:01:03,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:03" (3/3) ... [2020-09-25 09:01:03,857 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2020-09-25 09:01:03,870 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:03,888 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:03,913 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:03,957 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:03,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:03,958 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:03,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:03,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:03,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:03,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:03,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:04,005 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:01:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 09:01:04,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:04,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:04,050 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:04,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:04,058 INFO L82 PathProgramCache]: Analyzing trace with hash -2063330177, now seen corresponding path program 1 times [2020-09-25 09:01:04,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:04,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 09:01:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:04,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:06,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:09,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 09:01:09,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:01:09,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 09:01:09,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:09,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 09:01:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 09:01:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:01:09,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:09,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:09,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:09,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 09:01:09,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:09,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:01:09,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:09,820 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 09:01:09,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 09:01:09,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:09,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:01:09,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801897797] [2020-09-25 09:01:09,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:01:09,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:09,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:01:09,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:01:09,857 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:01:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:12,144 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 09:01:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:01:12,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-09-25 09:01:12,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:12,173 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 09:01:12,174 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 09:01:12,185 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 09:01:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 09:01:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 09:01:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:01:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 09:01:12,318 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 140 [2020-09-25 09:01:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:12,319 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 09:01:12,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:01:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 09:01:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 09:01:12,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:12,327 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, 1, 1, 1, 1, 1, 1, 1, 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 09:01:12,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:01:12,328 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:12,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1805238925, now seen corresponding path program 1 times [2020-09-25 09:01:12,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:12,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517619788] [2020-09-25 09:01:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:17,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 09:01:17,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:01:17,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:17,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:01:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:01:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:17,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:17,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:17,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 09:01:17,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:17,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:01:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:17,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:17,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:01:17,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 09:01:17,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:17,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:17,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:17,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517619788] [2020-09-25 09:01:17,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:17,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:01:17,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616040083] [2020-09-25 09:01:17,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:17,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:17,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:17,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:17,691 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 7 states. [2020-09-25 09:01:20,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:20,048 INFO L93 Difference]: Finished difference Result 1653 states and 2070 transitions. [2020-09-25 09:01:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:20,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 09:01:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:20,063 INFO L225 Difference]: With dead ends: 1653 [2020-09-25 09:01:20,064 INFO L226 Difference]: Without dead ends: 1074 [2020-09-25 09:01:20,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:01:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-09-25 09:01:20,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 973. [2020-09-25 09:01:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-09-25 09:01:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1199 transitions. [2020-09-25 09:01:20,125 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1199 transitions. Word has length 162 [2020-09-25 09:01:20,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:20,126 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1199 transitions. [2020-09-25 09:01:20,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:20,126 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1199 transitions. [2020-09-25 09:01:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 09:01:20,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:20,133 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, 1, 1, 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 09:01:20,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:20,134 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:20,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1181282038, now seen corresponding path program 1 times [2020-09-25 09:01:20,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:20,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892299714] [2020-09-25 09:01:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:20,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:21,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:21,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:25,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 09:01:25,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:01:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 09:01:25,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:25,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:01:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 09:01:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:25,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:25,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:25,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:01:25,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:25,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:25,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:25,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:01:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 09:01:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:25,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:01:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:25,729 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:01:25,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892299714] [2020-09-25 09:01:25,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:25,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:01:25,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607905832] [2020-09-25 09:01:25,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:01:25,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:01:25,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:25,734 INFO L87 Difference]: Start difference. First operand 973 states and 1199 transitions. Second operand 6 states. [2020-09-25 09:01:27,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:27,785 INFO L93 Difference]: Finished difference Result 2544 states and 3256 transitions. [2020-09-25 09:01:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:01:27,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-25 09:01:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:27,803 INFO L225 Difference]: With dead ends: 2544 [2020-09-25 09:01:27,804 INFO L226 Difference]: Without dead ends: 1595 [2020-09-25 09:01:27,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:27,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2020-09-25 09:01:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1547. [2020-09-25 09:01:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1547 states. [2020-09-25 09:01:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 1976 transitions. [2020-09-25 09:01:27,889 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 1976 transitions. Word has length 169 [2020-09-25 09:01:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:27,890 INFO L479 AbstractCegarLoop]: Abstraction has 1547 states and 1976 transitions. [2020-09-25 09:01:27,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:01:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 1976 transitions. [2020-09-25 09:01:27,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 09:01:27,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:27,899 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:27,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:27,903 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:27,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:27,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1796474422, now seen corresponding path program 1 times [2020-09-25 09:01:27,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:27,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768013898] [2020-09-25 09:01:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:27,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:32,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 09:01:32,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:01:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:01:32,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:32,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:01:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 09:01:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:33,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:33,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:01:33,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:33,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:01:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:33,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:33,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:33,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:33,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:33,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 09:01:33,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:33,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:33,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:33,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:01:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:33,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 09:01:33,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:33,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 09:01:33,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:33,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:33,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:33,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:01:33,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:01:33,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768013898] [2020-09-25 09:01:33,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:33,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:33,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022966212] [2020-09-25 09:01:33,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:33,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:33,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:33,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:33,427 INFO L87 Difference]: Start difference. First operand 1547 states and 1976 transitions. Second operand 7 states. [2020-09-25 09:01:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:35,520 INFO L93 Difference]: Finished difference Result 3254 states and 4208 transitions. [2020-09-25 09:01:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:01:35,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-09-25 09:01:35,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:35,531 INFO L225 Difference]: With dead ends: 3254 [2020-09-25 09:01:35,532 INFO L226 Difference]: Without dead ends: 1731 [2020-09-25 09:01:35,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:01:35,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2020-09-25 09:01:35,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1696. [2020-09-25 09:01:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2020-09-25 09:01:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2183 transitions. [2020-09-25 09:01:35,608 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2183 transitions. Word has length 194 [2020-09-25 09:01:35,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:35,609 INFO L479 AbstractCegarLoop]: Abstraction has 1696 states and 2183 transitions. [2020-09-25 09:01:35,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2183 transitions. [2020-09-25 09:01:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 09:01:35,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:35,622 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:35,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:35,622 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:35,623 INFO L82 PathProgramCache]: Analyzing trace with hash 382333289, now seen corresponding path program 1 times [2020-09-25 09:01:35,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:35,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743983837] [2020-09-25 09:01:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:35,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:40,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:40,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 09:01:40,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:01:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 09:01:40,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:40,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:01:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 09:01:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 09:01:40,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:40,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:40,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:40,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:40,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:40,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:01:40,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:40,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:40,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:40,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:01:40,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:40,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:01:40,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:40,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:01:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:40,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:40,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:01:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:40,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:40,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 09:01:40,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:40,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 09:01:40,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:40,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:01:40,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:01:41,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743983837] [2020-09-25 09:01:41,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:41,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:01:41,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495893247] [2020-09-25 09:01:41,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:01:41,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:41,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:01:41,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:41,139 INFO L87 Difference]: Start difference. First operand 1696 states and 2183 transitions. Second operand 8 states. [2020-09-25 09:01:41,907 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-25 09:01:44,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:44,820 INFO L93 Difference]: Finished difference Result 5106 states and 6875 transitions. [2020-09-25 09:01:44,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 09:01:44,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-09-25 09:01:44,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:44,841 INFO L225 Difference]: With dead ends: 5106 [2020-09-25 09:01:44,841 INFO L226 Difference]: Without dead ends: 3434 [2020-09-25 09:01:44,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:01:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2020-09-25 09:01:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 2479. [2020-09-25 09:01:44,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2020-09-25 09:01:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3166 transitions. [2020-09-25 09:01:44,981 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3166 transitions. Word has length 201 [2020-09-25 09:01:44,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:44,982 INFO L479 AbstractCegarLoop]: Abstraction has 2479 states and 3166 transitions. [2020-09-25 09:01:44,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:01:44,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3166 transitions. [2020-09-25 09:01:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 09:01:44,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:44,996 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:44,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:44,996 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:44,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:44,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1856671123, now seen corresponding path program 1 times [2020-09-25 09:01:44,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:44,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359313827] [2020-09-25 09:01:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:45,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking...