/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/Problem02_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:31:49,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:31:49,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:31:49,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:31:49,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:31:49,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:31:49,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:31:49,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:31:49,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:31:49,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:31:49,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:31:49,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:31:49,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:31:49,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:31:49,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:31:49,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:31:49,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:31:49,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:31:49,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:31:49,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:31:49,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:31:49,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:31:49,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:31:49,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:31:49,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:31:49,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:31:49,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:31:49,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:31:49,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:31:49,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:31:49,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:31:50,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:31:50,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:31:50,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:31:50,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:31:50,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:31:50,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:31:50,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:31:50,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:31:50,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:31:50,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:31:50,008 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 13:31:50,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:31:50,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:31:50,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:31:50,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:31:50,058 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:31:50,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:31:50,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:31:50,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:31:50,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:31:50,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:31:50,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:31:50,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:31:50,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:31:50,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:31:50,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:31:50,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:31:50,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:31:50,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:31:50,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:31:50,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:31:50,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:31:50,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:31:50,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:31:50,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:31:50,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:31:50,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:31:50,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:31:50,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:31:50,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:31:50,065 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 13:31:50,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:31:50,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:31:50,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:31:50,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:31:50,549 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:31:50,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 13:31:50,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b546a3e3/a652c3f6f75d4f51975d1812f9c75f25/FLAGe5b8b6b58 [2020-09-25 13:31:51,296 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:31:51,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 13:31:51,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b546a3e3/a652c3f6f75d4f51975d1812f9c75f25/FLAGe5b8b6b58 [2020-09-25 13:31:51,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b546a3e3/a652c3f6f75d4f51975d1812f9c75f25 [2020-09-25 13:31:51,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:31:51,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:31:51,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:31:51,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:31:51,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:31:51,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:31:51" (1/1) ... [2020-09-25 13:31:51,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:51, skipping insertion in model container [2020-09-25 13:31:51,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:31:51" (1/1) ... [2020-09-25 13:31:51,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:31:51,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:31:52,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:31:52,118 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:31:52,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:31:52,354 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:31:52,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:52 WrapperNode [2020-09-25 13:31:52,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:31:52,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:31:52,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:31:52,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:31:52,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:52" (1/1) ... [2020-09-25 13:31:52,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:52" (1/1) ... [2020-09-25 13:31:52,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:52" (1/1) ... [2020-09-25 13:31:52,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:52" (1/1) ... [2020-09-25 13:31:52,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:52" (1/1) ... [2020-09-25 13:31:52,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:52" (1/1) ... [2020-09-25 13:31:52,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:52" (1/1) ... [2020-09-25 13:31:52,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:31:52,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:31:52,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:31:52,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:31:52,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:52" (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 13:31:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:31:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:31:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:31:52,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:31:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:31:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:31:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:31:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:31:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:31:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:31:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:31:53,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:31:53,926 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:31:53,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:31:53 BoogieIcfgContainer [2020-09-25 13:31:53,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:31:53,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:31:53,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:31:53,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:31:53,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:31:51" (1/3) ... [2020-09-25 13:31:53,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:31:53, skipping insertion in model container [2020-09-25 13:31:53,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:52" (2/3) ... [2020-09-25 13:31:53,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:31:53, skipping insertion in model container [2020-09-25 13:31:53,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:31:53" (3/3) ... [2020-09-25 13:31:53,946 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2020-09-25 13:31:53,958 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:31:53,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:31:53,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:31:54,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:31:54,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:31:54,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:31:54,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:31:54,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:31:54,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:31:54,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:31:54,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:31:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:31:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 13:31:54,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:54,086 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] [2020-09-25 13:31:54,087 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:54,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:54,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1835465527, now seen corresponding path program 1 times [2020-09-25 13:31:54,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:54,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142353674] [2020-09-25 13:31:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:54,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:54,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:56,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:58,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:59,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:59,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 13:31:59,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:31:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 13:31:59,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:59,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:31:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 13:31:59,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:31:59,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:59,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:59,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:59,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:31:59,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:59,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:31:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:59,655 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 13:31:59,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142353674] [2020-09-25 13:31:59,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:31:59,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:31:59,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826766156] [2020-09-25 13:31:59,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:31:59,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:59,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:31:59,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:31:59,690 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:32:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:02,103 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 13:32:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:32:02,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-09-25 13:32:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:02,133 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 13:32:02,133 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 13:32:02,142 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 13:32:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 13:32:02,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 13:32:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 13:32:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 13:32:02,257 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 128 [2020-09-25 13:32:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:02,258 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 13:32:02,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:32:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 13:32:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 13:32:02,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:02,267 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] [2020-09-25 13:32:02,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:02,267 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:02,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:02,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1758478109, now seen corresponding path program 1 times [2020-09-25 13:32:02,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:02,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601159875] [2020-09-25 13:32:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:02,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:07,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:07,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 13:32:07,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:32:07,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 13:32:07,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:07,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:32:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 13:32:07,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:07,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:07,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:07,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:07,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:32:07,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:07,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:07,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:07,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:07,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:32:07,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:32:07,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:07,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:32:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:07,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601159875] [2020-09-25 13:32:07,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:07,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:07,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395881036] [2020-09-25 13:32:07,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:07,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:07,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:07,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:07,581 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 13:32:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:09,868 INFO L93 Difference]: Finished difference Result 1648 states and 2113 transitions. [2020-09-25 13:32:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:09,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 13:32:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:09,878 INFO L225 Difference]: With dead ends: 1648 [2020-09-25 13:32:09,878 INFO L226 Difference]: Without dead ends: 1011 [2020-09-25 13:32:09,882 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 13:32:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-09-25 13:32:09,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 965. [2020-09-25 13:32:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-09-25 13:32:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1175 transitions. [2020-09-25 13:32:09,938 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1175 transitions. Word has length 146 [2020-09-25 13:32:09,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:09,940 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1175 transitions. [2020-09-25 13:32:09,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:09,940 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1175 transitions. [2020-09-25 13:32:09,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 13:32:09,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:09,947 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] [2020-09-25 13:32:09,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:09,948 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:09,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1311010050, now seen corresponding path program 1 times [2020-09-25 13:32:09,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:09,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940214731] [2020-09-25 13:32:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:10,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:11,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:14,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:14,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 13:32:14,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:32:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:32:14,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:14,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:32:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 13:32:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:32:14,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:15,672 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-09-25 13:32:15,909 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-09-25 13:32:16,207 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 38 [2020-09-25 13:32:16,443 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 34 [2020-09-25 13:32:16,647 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 30 [2020-09-25 13:32:16,828 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 24 [2020-09-25 13:32:16,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:16,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:16,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:16,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:16,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:16,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:32:16,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:16,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:16,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:16,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:16,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:16,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:32:16,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:16,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:32:16,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:16,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:32:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:32:16,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:17,158 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 13:32:17,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940214731] [2020-09-25 13:32:17,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:17,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:32:17,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325059300] [2020-09-25 13:32:17,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:32:17,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:17,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:32:17,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:32:17,161 INFO L87 Difference]: Start difference. First operand 965 states and 1175 transitions. Second operand 13 states. [2020-09-25 13:32:17,948 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-09-25 13:32:18,459 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-09-25 13:32:18,927 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-09-25 13:32:19,557 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-09-25 13:32:20,323 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-09-25 13:32:20,528 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-09-25 13:32:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:21,073 INFO L93 Difference]: Finished difference Result 1996 states and 2510 transitions. [2020-09-25 13:32:21,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:32:21,077 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 147 [2020-09-25 13:32:21,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:21,087 INFO L225 Difference]: With dead ends: 1996 [2020-09-25 13:32:21,088 INFO L226 Difference]: Without dead ends: 1053 [2020-09-25 13:32:21,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:32:21,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2020-09-25 13:32:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1024. [2020-09-25 13:32:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-25 13:32:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1242 transitions. [2020-09-25 13:32:21,130 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1242 transitions. Word has length 147 [2020-09-25 13:32:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:21,131 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1242 transitions. [2020-09-25 13:32:21,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:32:21,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1242 transitions. [2020-09-25 13:32:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 13:32:21,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:21,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:21,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:32:21,136 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:21,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:21,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1957760341, now seen corresponding path program 1 times [2020-09-25 13:32:21,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:21,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168723497] [2020-09-25 13:32:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:22,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:22,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:23,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:26,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 13:32:26,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:32:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:32:26,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:26,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:32:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 13:32:26,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:26,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:26,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:26,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:32:26,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:26,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:26,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:26,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:26,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:32:26,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:32:26,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:26,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:32:26,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:26,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168723497] [2020-09-25 13:32:26,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:26,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:26,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054006174] [2020-09-25 13:32:26,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:26,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:26,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:26,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:26,374 INFO L87 Difference]: Start difference. First operand 1024 states and 1242 transitions. Second operand 5 states. [2020-09-25 13:32:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:28,304 INFO L93 Difference]: Finished difference Result 2378 states and 3005 transitions. [2020-09-25 13:32:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:28,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 13:32:28,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:28,322 INFO L225 Difference]: With dead ends: 2378 [2020-09-25 13:32:28,322 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 13:32:28,328 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 13:32:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 13:32:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1329. [2020-09-25 13:32:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-09-25 13:32:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1585 transitions. [2020-09-25 13:32:28,379 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1585 transitions. Word has length 150 [2020-09-25 13:32:28,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:28,380 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 1585 transitions. [2020-09-25 13:32:28,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1585 transitions. [2020-09-25 13:32:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 13:32:28,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:28,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:28,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:32:28,387 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:28,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:28,387 INFO L82 PathProgramCache]: Analyzing trace with hash 413342902, now seen corresponding path program 1 times [2020-09-25 13:32:28,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:28,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244742470] [2020-09-25 13:32:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:28,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:33,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:33,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 13:32:33,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:32:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 13:32:33,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:33,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:32:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:32:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:32:33,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:33,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:33,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:33,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:33,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:32:33,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:33,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:33,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:32:33,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:33,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:32:33,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:33,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:33,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:33,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:34,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:34,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:34,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:32:34,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 13:32:34,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:34,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:34,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:32:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:32:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:34,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244742470] [2020-09-25 13:32:34,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:34,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:32:34,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506495830] [2020-09-25 13:32:34,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:32:34,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:34,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:32:34,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:32:34,331 INFO L87 Difference]: Start difference. First operand 1329 states and 1585 transitions. Second operand 12 states. [2020-09-25 13:32:41,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:41,586 INFO L93 Difference]: Finished difference Result 6904 states and 9574 transitions. [2020-09-25 13:32:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 13:32:41,587 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2020-09-25 13:32:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:41,623 INFO L225 Difference]: With dead ends: 6904 [2020-09-25 13:32:41,623 INFO L226 Difference]: Without dead ends: 5597 [2020-09-25 13:32:41,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:32:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2020-09-25 13:32:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 5288. [2020-09-25 13:32:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5288 states. [2020-09-25 13:32:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 6551 transitions. [2020-09-25 13:32:41,813 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 6551 transitions. Word has length 157 [2020-09-25 13:32:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:41,813 INFO L479 AbstractCegarLoop]: Abstraction has 5288 states and 6551 transitions. [2020-09-25 13:32:41,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:32:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 6551 transitions. [2020-09-25 13:32:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 13:32:41,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:41,834 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:41,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:32:41,834 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:41,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:41,835 INFO L82 PathProgramCache]: Analyzing trace with hash -171518165, now seen corresponding path program 1 times [2020-09-25 13:32:41,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:41,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958360272] [2020-09-25 13:32:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:41,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking...