/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:04,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:04,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:04,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:04,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:04,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:04,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:04,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:04,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:04,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:04,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:04,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:04,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:04,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:04,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:04,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:04,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:04,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:04,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:04,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:04,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:04,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:04,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:04,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:04,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:04,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:04,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:04,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:04,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:04,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:04,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:04,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:04,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:04,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:04,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:04,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:04,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:04,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:04,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:04,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:04,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:04,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:41:04,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:04,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:04,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:04,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:04,254 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:04,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:04,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:04,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:04,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:04,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:04,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:04,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:04,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:04,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:04,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:04,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:04,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:04,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:04,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:04,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:04,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:04,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:04,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:04,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:04,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:04,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:04,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:04,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:04,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:04,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:41:04,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:04,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:04,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:04,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:04,819 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:04,822 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 14:41:04,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0bb1db95/99c6c0600daf41e2ad267cd25fd27561/FLAG1d4ff5fd9 [2020-09-25 14:41:05,574 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:05,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 14:41:05,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0bb1db95/99c6c0600daf41e2ad267cd25fd27561/FLAG1d4ff5fd9 [2020-09-25 14:41:05,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0bb1db95/99c6c0600daf41e2ad267cd25fd27561 [2020-09-25 14:41:05,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:05,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:05,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:05,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:05,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:05,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:05" (1/1) ... [2020-09-25 14:41:05,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:05, skipping insertion in model container [2020-09-25 14:41:05,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:05" (1/1) ... [2020-09-25 14:41:05,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:05,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:06,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:06,424 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:06,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:06,718 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:06,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:06 WrapperNode [2020-09-25 14:41:06,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:06,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:06,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:06,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:06,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:06" (1/1) ... [2020-09-25 14:41:06,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:06" (1/1) ... [2020-09-25 14:41:06,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:06" (1/1) ... [2020-09-25 14:41:06,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:06" (1/1) ... [2020-09-25 14:41:06,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:06" (1/1) ... [2020-09-25 14:41:06,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:06" (1/1) ... [2020-09-25 14:41:06,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:06" (1/1) ... [2020-09-25 14:41:06,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:06,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:06,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:06,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:06,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:08,518 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:08,518 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:08,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:08 BoogieIcfgContainer [2020-09-25 14:41:08,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:08,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:08,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:08,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:08,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:05" (1/3) ... [2020-09-25 14:41:08,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:08, skipping insertion in model container [2020-09-25 14:41:08,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:06" (2/3) ... [2020-09-25 14:41:08,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:08, skipping insertion in model container [2020-09-25 14:41:08,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:08" (3/3) ... [2020-09-25 14:41:08,539 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2020-09-25 14:41:08,551 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:08,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:08,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:08,622 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:08,622 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:08,622 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:08,623 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:08,623 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:08,623 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:08,623 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:08,623 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:08,655 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 14:41:08,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:08,667 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] [2020-09-25 14:41:08,668 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:08,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:08,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1813443015, now seen corresponding path program 1 times [2020-09-25 14:41:08,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:08,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 14:41:08,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:10,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:10,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 14:41:10,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:41:10,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1174 [2020-09-25 14:41:10,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:10,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:41:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:41:10,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:41:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:10,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:10,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:10,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:10,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:10,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:41:10,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:10,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:41:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:10,246 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 14:41:10,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 14:41:10,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:10,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:10,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514538398] [2020-09-25 14:41:10,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:10,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:10,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:10,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:10,285 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:41:12,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:12,453 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 14:41:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:12,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 14:41:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:12,482 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 14:41:12,482 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 14:41:12,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:12,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 14:41:12,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 14:41:12,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 14:41:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 14:41:12,591 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 55 [2020-09-25 14:41:12,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:12,592 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 14:41:12,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:12,592 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 14:41:12,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 14:41:12,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:12,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:12,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:12,601 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:12,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:12,601 INFO L82 PathProgramCache]: Analyzing trace with hash -226140616, now seen corresponding path program 1 times [2020-09-25 14:41:12,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:12,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288640478] [2020-09-25 14:41:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:12,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:15,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:41:15,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2914 [2020-09-25 14:41:15,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:15,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:41:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:41:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 14:41:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:15,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:15,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:15,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:15,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:41:15,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:15,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:15,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:15,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:15,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:15,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:15,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 14:41:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:15,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:41:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:41:16,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288640478] [2020-09-25 14:41:16,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:16,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:41:16,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953986178] [2020-09-25 14:41:16,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:41:16,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:16,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:41:16,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:16,039 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 14:41:18,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:18,326 INFO L93 Difference]: Finished difference Result 1165 states and 1482 transitions. [2020-09-25 14:41:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:41:18,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-09-25 14:41:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:18,336 INFO L225 Difference]: With dead ends: 1165 [2020-09-25 14:41:18,337 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 14:41:18,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 14:41:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 851. [2020-09-25 14:41:18,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 14:41:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1111 transitions. [2020-09-25 14:41:18,402 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1111 transitions. Word has length 134 [2020-09-25 14:41:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:18,403 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1111 transitions. [2020-09-25 14:41:18,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:41:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1111 transitions. [2020-09-25 14:41:18,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 14:41:18,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:18,416 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:18,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:18,417 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:18,417 INFO L82 PathProgramCache]: Analyzing trace with hash -281265186, now seen corresponding path program 1 times [2020-09-25 14:41:18,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:18,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961394621] [2020-09-25 14:41:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:18,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:18,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:23,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-25 14:41:23,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 14:41:23,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:23,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:41:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 14:41:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:23,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:23,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:23,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:23,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:23,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:23,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:23,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:23,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:23,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 14:41:23,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:23,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:41:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:41:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:24,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:41:24,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:24,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 14:41:24,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:24,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:41:24,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:24,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961394621] [2020-09-25 14:41:24,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:24,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:41:24,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328871709] [2020-09-25 14:41:24,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:24,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:24,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:24,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:24,289 INFO L87 Difference]: Start difference. First operand 851 states and 1111 transitions. Second operand 7 states. [2020-09-25 14:41:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:26,524 INFO L93 Difference]: Finished difference Result 2041 states and 2779 transitions. [2020-09-25 14:41:26,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:26,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-09-25 14:41:26,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:26,541 INFO L225 Difference]: With dead ends: 2041 [2020-09-25 14:41:26,541 INFO L226 Difference]: Without dead ends: 1205 [2020-09-25 14:41:26,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:26,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2020-09-25 14:41:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1015. [2020-09-25 14:41:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-09-25 14:41:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1328 transitions. [2020-09-25 14:41:26,620 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1328 transitions. Word has length 263 [2020-09-25 14:41:26,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:26,622 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1328 transitions. [2020-09-25 14:41:26,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1328 transitions. [2020-09-25 14:41:26,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 14:41:26,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:26,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:26,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:26,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:26,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:26,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1969044888, now seen corresponding path program 1 times [2020-09-25 14:41:26,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:26,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261790428] [2020-09-25 14:41:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:26,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:31,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 14:41:31,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:31,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:41:31,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:31,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:31,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:31,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:41:31,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 14:41:31,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:31,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:31,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:31,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:31,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:41:31,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:31,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:31,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:31,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:31,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:31,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:31,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:31,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:31,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:41:31,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:31,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:41:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:31,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:41:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:32,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 14:41:32,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 14:41:32,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:32,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 14:41:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:32,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261790428] [2020-09-25 14:41:32,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:32,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:41:32,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631120986] [2020-09-25 14:41:32,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:32,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:32,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:32,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:32,506 INFO L87 Difference]: Start difference. First operand 1015 states and 1328 transitions. Second operand 7 states. [2020-09-25 14:41:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:34,883 INFO L93 Difference]: Finished difference Result 2501 states and 3377 transitions. [2020-09-25 14:41:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:41:34,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-09-25 14:41:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:34,898 INFO L225 Difference]: With dead ends: 2501 [2020-09-25 14:41:34,898 INFO L226 Difference]: Without dead ends: 1501 [2020-09-25 14:41:34,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:41:34,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2020-09-25 14:41:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1335. [2020-09-25 14:41:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-09-25 14:41:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1726 transitions. [2020-09-25 14:41:34,973 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1726 transitions. Word has length 269 [2020-09-25 14:41:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:34,975 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1726 transitions. [2020-09-25 14:41:34,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1726 transitions. [2020-09-25 14:41:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-09-25 14:41:34,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:34,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:34,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:34,987 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:34,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:34,987 INFO L82 PathProgramCache]: Analyzing trace with hash 917155499, now seen corresponding path program 1 times [2020-09-25 14:41:34,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:34,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921699562] [2020-09-25 14:41:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:35,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:40,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-25 14:41:40,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:41:40,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-09-25 14:41:40,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:40,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 14:41:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 14:41:40,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:40,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:40,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:40,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:40,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:41:40,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:40,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:40,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:40,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:40,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:40,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:40,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:40,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:41:40,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 14:41:40,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:40,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 14:41:40,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 14:41:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:40,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:40,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:41:40,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:40,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 14:41:40,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:40,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:41:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:40,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921699562] [2020-09-25 14:41:40,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:40,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:41:40,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415791049] [2020-09-25 14:41:40,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:40,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:40,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:40,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:40,952 INFO L87 Difference]: Start difference. First operand 1335 states and 1726 transitions. Second operand 7 states. [2020-09-25 14:41:44,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:44,025 INFO L93 Difference]: Finished difference Result 3280 states and 4478 transitions. [2020-09-25 14:41:44,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:41:44,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-09-25 14:41:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:44,046 INFO L225 Difference]: With dead ends: 3280 [2020-09-25 14:41:44,046 INFO L226 Difference]: Without dead ends: 1960 [2020-09-25 14:41:44,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:41:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-09-25 14:41:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1809. [2020-09-25 14:41:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2020-09-25 14:41:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2305 transitions. [2020-09-25 14:41:44,142 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2305 transitions. Word has length 270 [2020-09-25 14:41:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:44,143 INFO L479 AbstractCegarLoop]: Abstraction has 1809 states and 2305 transitions. [2020-09-25 14:41:44,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2305 transitions. [2020-09-25 14:41:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 14:41:44,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:44,151 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:44,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:41:44,152 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:44,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:44,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1451587462, now seen corresponding path program 1 times [2020-09-25 14:41:44,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:44,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597472247] [2020-09-25 14:41:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:44,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:46,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:49,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 14:41:49,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:41:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:41:49,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:49,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 14:41:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 14:41:49,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:49,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:49,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:49,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:49,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:49,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:41:49,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:49,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:49,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:49,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:49,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:49,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:49,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 14:41:49,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:49,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:41:49,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:41:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:49,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:49,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 14:41:49,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:49,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 14:41:49,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:49,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 14:41:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:49,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597472247] [2020-09-25 14:41:49,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:49,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:41:49,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608202977] [2020-09-25 14:41:49,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:49,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:49,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:49,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:49,817 INFO L87 Difference]: Start difference. First operand 1809 states and 2305 transitions. Second operand 8 states. [2020-09-25 14:41:52,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:52,787 INFO L93 Difference]: Finished difference Result 3969 states and 5151 transitions. [2020-09-25 14:41:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:41:52,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-09-25 14:41:52,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:52,799 INFO L225 Difference]: With dead ends: 3969 [2020-09-25 14:41:52,799 INFO L226 Difference]: Without dead ends: 1651 [2020-09-25 14:41:52,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:41:52,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-09-25 14:41:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1583. [2020-09-25 14:41:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-09-25 14:41:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 1809 transitions. [2020-09-25 14:41:52,860 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 1809 transitions. Word has length 279 [2020-09-25 14:41:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:52,860 INFO L479 AbstractCegarLoop]: Abstraction has 1583 states and 1809 transitions. [2020-09-25 14:41:52,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 1809 transitions. [2020-09-25 14:41:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-09-25 14:41:52,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:52,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:52,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:41:52,868 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:52,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:52,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1793763885, now seen corresponding path program 1 times [2020-09-25 14:41:52,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:52,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811487779] [2020-09-25 14:41:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:52,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:53,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking...