/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/Problem02_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:33,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:33,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:33,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:33,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:33,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:33,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:33,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:33,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:33,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:33,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:33,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:33,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:33,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:33,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:33,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:33,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:33,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:33,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:33,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:33,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:33,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:33,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:33,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:33,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:33,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:33,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:33,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:33,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:33,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:33,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:33,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:33,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:33,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:33,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:33,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:33,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:33,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:33,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:33,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:33,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:33,248 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 09:01:33,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:33,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:33,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:33,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:33,296 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:33,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:33,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:33,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:33,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:33,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:33,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:33,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:33,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:33,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:33,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:33,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:33,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:33,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:33,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:33,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:33,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:33,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:33,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:33,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:33,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:33,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:33,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:33,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:33,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:33,303 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 09:01:33,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:33,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:33,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:33,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:33,812 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:33,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 09:01:33,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3452d70ac/f99d16e2bead4aa1b632ee4de03dbbdb/FLAGabc29d288 [2020-09-25 09:01:34,564 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:34,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 09:01:34,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3452d70ac/f99d16e2bead4aa1b632ee4de03dbbdb/FLAGabc29d288 [2020-09-25 09:01:34,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3452d70ac/f99d16e2bead4aa1b632ee4de03dbbdb [2020-09-25 09:01:34,831 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:34,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:34,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:34,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:34,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:34,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:34" (1/1) ... [2020-09-25 09:01:34,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23064e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:34, skipping insertion in model container [2020-09-25 09:01:34,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:34" (1/1) ... [2020-09-25 09:01:34,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:34,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:35,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:35,495 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:35,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:35,763 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:35,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:35 WrapperNode [2020-09-25 09:01:35,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:35,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:35,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:35,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:35,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:35" (1/1) ... [2020-09-25 09:01:35,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:35" (1/1) ... [2020-09-25 09:01:35,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:35" (1/1) ... [2020-09-25 09:01:35,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:35" (1/1) ... [2020-09-25 09:01:35,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:35" (1/1) ... [2020-09-25 09:01:35,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:35" (1/1) ... [2020-09-25 09:01:35,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:35" (1/1) ... [2020-09-25 09:01:35,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:35,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:35,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:35,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:35,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:35" (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 09:01:36,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:36,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:36,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:36,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:37,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:37,292 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:37,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:37 BoogieIcfgContainer [2020-09-25 09:01:37,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:37,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:37,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:37,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:37,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:34" (1/3) ... [2020-09-25 09:01:37,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bc5a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:37, skipping insertion in model container [2020-09-25 09:01:37,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:35" (2/3) ... [2020-09-25 09:01:37,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bc5a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:37, skipping insertion in model container [2020-09-25 09:01:37,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:37" (3/3) ... [2020-09-25 09:01:37,319 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2020-09-25 09:01:37,331 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:37,345 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:37,368 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:37,420 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:37,420 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:37,420 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:37,421 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:37,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:37,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:37,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:37,421 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:37,455 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:01:37,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 09:01:37,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:37,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:37,480 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:37,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:37,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1323495626, now seen corresponding path program 1 times [2020-09-25 09:01:37,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:37,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866633086] [2020-09-25 09:01:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:39,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:42,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 09:01:42,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 09:01:42,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:42,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 09:01:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:01:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:43,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:43,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:01:43,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:43,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:01:43,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:43,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:43,247 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 09:01:43,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866633086] [2020-09-25 09:01:43,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:43,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:01:43,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076913534] [2020-09-25 09:01:43,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:01:43,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:43,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:01:43,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:01:43,281 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:01:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:45,746 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 09:01:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:01:45,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 09:01:45,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:45,775 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 09:01:45,776 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 09:01:45,788 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 09:01:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 09:01:45,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 09:01:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 09:01:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 09:01:45,898 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 141 [2020-09-25 09:01:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:45,899 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 09:01:45,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:01:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 09:01:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 09:01:45,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:45,909 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:01:45,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:01:45,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:45,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:45,911 INFO L82 PathProgramCache]: Analyzing trace with hash -427811082, now seen corresponding path program 1 times [2020-09-25 09:01:45,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:45,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443955561] [2020-09-25 09:01:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:50,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 09:01:50,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:01:50,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 09:01:50,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:50,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 09:01:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 09:01:50,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:51,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:01:51,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:51,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:01:51,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:51,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:01:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:51,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:01:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:51,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:01:51,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:01:51,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:51,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:01:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:01:51,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443955561] [2020-09-25 09:01:51,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:51,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:51,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674342694] [2020-09-25 09:01:51,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:51,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:51,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:51,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:51,317 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 7 states. [2020-09-25 09:01:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:53,649 INFO L93 Difference]: Finished difference Result 1777 states and 2246 transitions. [2020-09-25 09:01:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:01:53,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-09-25 09:01:53,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:53,659 INFO L225 Difference]: With dead ends: 1777 [2020-09-25 09:01:53,659 INFO L226 Difference]: Without dead ends: 1066 [2020-09-25 09:01:53,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:01:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-25 09:01:53,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 878. [2020-09-25 09:01:53,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 09:01:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1106 transitions. [2020-09-25 09:01:53,709 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1106 transitions. Word has length 159 [2020-09-25 09:01:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:53,710 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1106 transitions. [2020-09-25 09:01:53,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1106 transitions. [2020-09-25 09:01:53,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 09:01:53,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:53,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:53,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:53,716 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:53,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:53,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1927343599, now seen corresponding path program 1 times [2020-09-25 09:01:53,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:53,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701086718] [2020-09-25 09:01:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:53,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:53,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:58,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 09:01:58,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:01:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:01:58,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:58,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 09:01:58,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 09:01:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:58,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:58,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:58,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:01:58,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:01:58,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:58,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:01:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:58,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:58,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:01:58,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:01:58,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:58,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:58,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:01:58,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:59,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701086718] [2020-09-25 09:01:59,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:59,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:59,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896207183] [2020-09-25 09:01:59,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:59,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:59,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:59,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:59,096 INFO L87 Difference]: Start difference. First operand 878 states and 1106 transitions. Second operand 5 states. [2020-09-25 09:02:01,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:01,315 INFO L93 Difference]: Finished difference Result 2238 states and 2958 transitions. [2020-09-25 09:02:01,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:01,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 09:02:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:01,330 INFO L225 Difference]: With dead ends: 2238 [2020-09-25 09:02:01,330 INFO L226 Difference]: Without dead ends: 1382 [2020-09-25 09:02:01,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-09-25 09:02:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1339. [2020-09-25 09:02:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-09-25 09:02:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1633 transitions. [2020-09-25 09:02:01,416 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1633 transitions. Word has length 175 [2020-09-25 09:02:01,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:01,418 INFO L479 AbstractCegarLoop]: Abstraction has 1339 states and 1633 transitions. [2020-09-25 09:02:01,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1633 transitions. [2020-09-25 09:02:01,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 09:02:01,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:01,457 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:01,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:02:01,464 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:01,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:01,465 INFO L82 PathProgramCache]: Analyzing trace with hash 482825858, now seen corresponding path program 1 times [2020-09-25 09:02:01,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:01,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497369157] [2020-09-25 09:02:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:01,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:01,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:06,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:06,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 09:02:06,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:02:06,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:02:06,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:06,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 09:02:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:02:06,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:06,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:06,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:06,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:06,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:02:06,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:06,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:02:06,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:06,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:02:06,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:06,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:06,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:06,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:06,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:02:06,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:02:06,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497369157] [2020-09-25 09:02:06,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:06,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:02:06,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582324662] [2020-09-25 09:02:06,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:06,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:06,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:06,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:06,811 INFO L87 Difference]: Start difference. First operand 1339 states and 1633 transitions. Second operand 5 states. [2020-09-25 09:02:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:09,052 INFO L93 Difference]: Finished difference Result 3580 states and 4539 transitions. [2020-09-25 09:02:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:09,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 09:02:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:09,069 INFO L225 Difference]: With dead ends: 3580 [2020-09-25 09:02:09,069 INFO L226 Difference]: Without dead ends: 2263 [2020-09-25 09:02:09,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:09,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2020-09-25 09:02:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 1970. [2020-09-25 09:02:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1970 states. [2020-09-25 09:02:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2476 transitions. [2020-09-25 09:02:09,142 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2476 transitions. Word has length 179 [2020-09-25 09:02:09,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:09,143 INFO L479 AbstractCegarLoop]: Abstraction has 1970 states and 2476 transitions. [2020-09-25 09:02:09,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:09,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2476 transitions. [2020-09-25 09:02:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 09:02:09,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:09,155 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 09:02:09,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:02:09,156 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1193444011, now seen corresponding path program 1 times [2020-09-25 09:02:09,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:09,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73921111] [2020-09-25 09:02:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:09,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:09,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:09,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:14,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 09:02:14,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:02:14,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 09:02:14,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:14,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:14,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:14,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 09:02:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-09-25 09:02:14,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:14,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:14,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:14,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:14,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:14,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:02:14,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:14,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:02:14,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:14,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:14,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:02:14,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:14,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:02:14,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:14,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:02:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:02:14,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 09:02:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:14,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 09:02:14,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:02:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 09:02:14,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:14,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 09:02:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:02:14,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73921111] [2020-09-25 09:02:14,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:14,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:02:14,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077832726] [2020-09-25 09:02:14,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:02:14,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:14,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:02:14,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:02:14,798 INFO L87 Difference]: Start difference. First operand 1970 states and 2476 transitions. Second operand 7 states. [2020-09-25 09:02:18,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:18,555 INFO L93 Difference]: Finished difference Result 6939 states and 9652 transitions. [2020-09-25 09:02:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:02:18,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-09-25 09:02:18,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:18,597 INFO L225 Difference]: With dead ends: 6939 [2020-09-25 09:02:18,598 INFO L226 Difference]: Without dead ends: 4391 [2020-09-25 09:02:18,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 09:02:18,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4391 states. [2020-09-25 09:02:18,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4391 to 3953. [2020-09-25 09:02:18,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2020-09-25 09:02:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5095 transitions. [2020-09-25 09:02:18,793 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5095 transitions. Word has length 250 [2020-09-25 09:02:18,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:18,793 INFO L479 AbstractCegarLoop]: Abstraction has 3953 states and 5095 transitions. [2020-09-25 09:02:18,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:02:18,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5095 transitions. [2020-09-25 09:02:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-25 09:02:18,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:18,823 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:18,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:02:18,823 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:18,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:18,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1156040154, now seen corresponding path program 1 times [2020-09-25 09:02:18,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:18,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426581737] [2020-09-25 09:02:18,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:18,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:19,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:23,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:23,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-09-25 09:02:23,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:02:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 09:02:23,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:23,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:23,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:23,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 09:02:23,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 09:02:23,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:24,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:24,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:24,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:24,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:24,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:24,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:02:24,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:24,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:24,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:24,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:24,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:24,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:24,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:24,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:24,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:02:24,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:02:24,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:24,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 09:02:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:24,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:02:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:24,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:24,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:24,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:02:24,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:02:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 09:02:24,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:24,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:02:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 09:02:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:24,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:24,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:24,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 09:02:24,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 09:02:24,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:24,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 09:02:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 09:02:24,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426581737] [2020-09-25 09:02:24,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:24,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:02:24,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540514278] [2020-09-25 09:02:24,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:02:24,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:24,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:02:24,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:02:24,562 INFO L87 Difference]: Start difference. First operand 3953 states and 5095 transitions. Second operand 8 states.