/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:03,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:03,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:03,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:03,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:03,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:03,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:03,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:03,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:03,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:03,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:03,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:03,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:03,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:03,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:03,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:03,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:03,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:03,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:03,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:03,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:03,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:03,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:03,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:03,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:03,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:03,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:03,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:03,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:03,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:03,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:03,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:03,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:03,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:03,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:03,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:03,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:03,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:03,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:03,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:03,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:03,988 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 13:29:04,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:04,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:04,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:04,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:04,057 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:04,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:04,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:04,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:04,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:04,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:04,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:04,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:04,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:04,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:04,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:04,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:04,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:04,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:04,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:04,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:04,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:04,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:04,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:04,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:04,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:04,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:04,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:04,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:04,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:04,066 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:29:04,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:04,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:04,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:04,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:04,563 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:04,565 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 13:29:04,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b236347/b1c816e5dec74bae8435eb0568dd6a56/FLAG922912f4d [2020-09-25 13:29:05,318 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:05,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 13:29:05,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b236347/b1c816e5dec74bae8435eb0568dd6a56/FLAG922912f4d [2020-09-25 13:29:05,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23b236347/b1c816e5dec74bae8435eb0568dd6a56 [2020-09-25 13:29:05,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:05,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:05,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:05,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:05,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:05,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:05,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:05, skipping insertion in model container [2020-09-25 13:29:05,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:05" (1/1) ... [2020-09-25 13:29:05,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:05,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:06,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:06,195 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:06,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:06,477 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:06,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:06 WrapperNode [2020-09-25 13:29:06,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:06,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:06,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:06,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:06,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:06" (1/1) ... [2020-09-25 13:29:06,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:06" (1/1) ... [2020-09-25 13:29:06,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:06" (1/1) ... [2020-09-25 13:29:06,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:06" (1/1) ... [2020-09-25 13:29:06,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:06" (1/1) ... [2020-09-25 13:29:06,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:06" (1/1) ... [2020-09-25 13:29:06,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:06" (1/1) ... [2020-09-25 13:29:06,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:06,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:06,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:06,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:06,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:06" (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 13:29:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:06,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:08,196 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:08,197 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:08,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:08 BoogieIcfgContainer [2020-09-25 13:29:08,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:08,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:08,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:08,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:08,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:05" (1/3) ... [2020-09-25 13:29:08,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:08, skipping insertion in model container [2020-09-25 13:29:08,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:06" (2/3) ... [2020-09-25 13:29:08,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:08, skipping insertion in model container [2020-09-25 13:29:08,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:08" (3/3) ... [2020-09-25 13:29:08,225 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-09-25 13:29:08,238 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:08,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:08,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:08,323 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:08,323 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:08,324 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:08,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:08,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:08,324 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:08,324 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:08,324 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:29:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 13:29:08,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:08,379 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] [2020-09-25 13:29:08,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:08,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:08,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559547, now seen corresponding path program 1 times [2020-09-25 13:29:08,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:08,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 13:29:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:13,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 13:29:13,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 13:29:13,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:13,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:29:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 13:29:13,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:29:13,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:13,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:13,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:29:13,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:13,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:29:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:13,998 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 13:29:13,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 13:29:14,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:14,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:29:14,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925075883] [2020-09-25 13:29:14,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:29:14,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:14,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:29:14,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:29:14,030 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:29:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:16,210 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 13:29:16,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:29:16,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 13:29:16,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:16,267 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 13:29:16,268 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 13:29:16,279 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 13:29:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 13:29:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 13:29:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 13:29:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 13:29:16,388 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 131 [2020-09-25 13:29:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:16,389 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 13:29:16,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:29:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 13:29:16,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 13:29:16,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:16,404 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-25 13:29:16,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:16,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:16,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:16,405 INFO L82 PathProgramCache]: Analyzing trace with hash 139765844, now seen corresponding path program 1 times [2020-09-25 13:29:16,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:16,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483056613] [2020-09-25 13:29:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:16,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:21,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 13:29:21,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:29:21,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:29:21,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:21,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:21,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:21,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 13:29:21,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 13:29:21,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:21,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:21,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:21,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:21,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:21,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:29:21,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:21,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:21,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:21,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:21,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:21,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:29:21,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:21,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:29:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:21,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483056613] [2020-09-25 13:29:21,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:21,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:21,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823264293] [2020-09-25 13:29:21,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:21,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:21,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:21,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:21,687 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 13:29:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:23,880 INFO L93 Difference]: Finished difference Result 1623 states and 1990 transitions. [2020-09-25 13:29:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:23,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 13:29:23,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:23,887 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 13:29:23,887 INFO L226 Difference]: Without dead ends: 983 [2020-09-25 13:29:23,891 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 13:29:23,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-09-25 13:29:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 950. [2020-09-25 13:29:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 13:29:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1106 transitions. [2020-09-25 13:29:23,936 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1106 transitions. Word has length 152 [2020-09-25 13:29:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:23,937 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1106 transitions. [2020-09-25 13:29:23,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:23,937 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1106 transitions. [2020-09-25 13:29:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 13:29:23,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:23,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:23,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:23,950 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:23,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:23,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2020064762, now seen corresponding path program 1 times [2020-09-25 13:29:23,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:23,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973028077] [2020-09-25 13:29:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:29,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 13:29:29,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:29:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:29:29,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:29,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 13:29:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 13:29:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:29,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:29,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:29:29,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:29,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:29,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:29,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:29,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 13:29:29,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 13:29:29,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:29,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:29:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:29,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973028077] [2020-09-25 13:29:29,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:29,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:29,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298468214] [2020-09-25 13:29:29,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:29,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:29,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:29,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:29,383 INFO L87 Difference]: Start difference. First operand 950 states and 1106 transitions. Second operand 5 states. [2020-09-25 13:29:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:31,308 INFO L93 Difference]: Finished difference Result 2370 states and 2865 transitions. [2020-09-25 13:29:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:31,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 13:29:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:31,319 INFO L225 Difference]: With dead ends: 2370 [2020-09-25 13:29:31,320 INFO L226 Difference]: Without dead ends: 1444 [2020-09-25 13:29:31,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 13:29:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-09-25 13:29:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1379. [2020-09-25 13:29:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-09-25 13:29:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1630 transitions. [2020-09-25 13:29:31,373 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1630 transitions. Word has length 178 [2020-09-25 13:29:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:31,374 INFO L479 AbstractCegarLoop]: Abstraction has 1379 states and 1630 transitions. [2020-09-25 13:29:31,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1630 transitions. [2020-09-25 13:29:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 13:29:31,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:31,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:29:31,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:31,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:31,382 INFO L82 PathProgramCache]: Analyzing trace with hash -807439965, now seen corresponding path program 1 times [2020-09-25 13:29:31,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:31,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835524286] [2020-09-25 13:29:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:31,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:31,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:31,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:36,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 13:29:36,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 13:29:36,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:36,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 13:29:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 13:29:36,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:36,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:36,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:36,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:36,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:29:36,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:36,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:36,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:36,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:29:36,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:36,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:36,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:36,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:29:36,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:36,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 13:29:36,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:36,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:29:36,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 13:29:36,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835524286] [2020-09-25 13:29:36,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:36,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:36,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087869766] [2020-09-25 13:29:36,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:36,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:36,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:36,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:36,839 INFO L87 Difference]: Start difference. First operand 1379 states and 1630 transitions. Second operand 5 states. [2020-09-25 13:29:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:38,932 INFO L93 Difference]: Finished difference Result 3735 states and 4534 transitions. [2020-09-25 13:29:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:38,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 13:29:38,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:38,950 INFO L225 Difference]: With dead ends: 3735 [2020-09-25 13:29:38,951 INFO L226 Difference]: Without dead ends: 2380 [2020-09-25 13:29:38,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:38,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2020-09-25 13:29:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2144. [2020-09-25 13:29:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2144 states. [2020-09-25 13:29:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 2577 transitions. [2020-09-25 13:29:39,050 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 2577 transitions. Word has length 189 [2020-09-25 13:29:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:39,052 INFO L479 AbstractCegarLoop]: Abstraction has 2144 states and 2577 transitions. [2020-09-25 13:29:39,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 2577 transitions. [2020-09-25 13:29:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 13:29:39,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:39,064 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:39,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:29:39,064 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:39,065 INFO L82 PathProgramCache]: Analyzing trace with hash 697558128, now seen corresponding path program 1 times [2020-09-25 13:29:39,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:39,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229890305] [2020-09-25 13:29:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:44,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:44,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 13:29:44,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:29:44,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 13:29:44,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:44,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:29:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 13:29:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:29:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:44,592 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-09-25 13:29:44,736 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-09-25 13:29:44,934 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 41 [2020-09-25 13:29:45,119 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2020-09-25 13:29:45,278 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 37 [2020-09-25 13:29:45,436 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 34 [2020-09-25 13:29:45,595 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 31 [2020-09-25 13:29:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:45,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:45,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:29:45,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:45,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:45,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:45,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:45,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:45,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:29:45,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:45,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:45,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:45,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:45,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:45,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:29:45,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:45,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:45,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 13:29:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:45,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:45,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:29:45,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:45,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 13:29:45,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:45,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:29:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:29:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 13:29:46,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229890305] [2020-09-25 13:29:46,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:46,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:29:46,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356877463] [2020-09-25 13:29:46,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:29:46,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:46,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:29:46,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:29:46,225 INFO L87 Difference]: Start difference. First operand 2144 states and 2577 transitions. Second operand 16 states. [2020-09-25 13:29:47,018 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 13:29:47,225 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-25 13:29:48,201 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2020-09-25 13:29:49,519 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2020-09-25 13:29:50,015 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 94 [2020-09-25 13:29:50,241 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-09-25 13:29:50,662 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2020-09-25 13:29:51,904 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 89