/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:50:36,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:50:36,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:50:36,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:50:36,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:50:36,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:50:36,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:50:36,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:50:36,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:50:36,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:50:36,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:50:36,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:50:36,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:50:36,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:50:36,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:50:36,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:50:36,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:50:36,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:50:36,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:50:36,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:50:36,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:50:36,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:50:36,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:50:36,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:50:37,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:50:37,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:50:37,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:50:37,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:50:37,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:50:37,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:50:37,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:50:37,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:50:37,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:50:37,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:50:37,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:50:37,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:50:37,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:50:37,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:50:37,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:50:37,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:50:37,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:50:37,035 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 07:50:37,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:50:37,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:50:37,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:50:37,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:50:37,085 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:50:37,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:50:37,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:50:37,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:50:37,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:50:37,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:50:37,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:50:37,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:50:37,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:50:37,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:50:37,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:50:37,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:50:37,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:50:37,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:50:37,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:50:37,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:50:37,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:50:37,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:37,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:50:37,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:50:37,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:50:37,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:50:37,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:50:37,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:50:37,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:50:37,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:50:37,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:50:37,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:50:37,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:50:37,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:50:37,542 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:50:37,544 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 07:50:37,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/597e3572c/4ab3b9337a0146a7a792ecb158abf47b/FLAGfd65749f4 [2020-09-25 07:50:38,360 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:50:38,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 07:50:38,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/597e3572c/4ab3b9337a0146a7a792ecb158abf47b/FLAGfd65749f4 [2020-09-25 07:50:38,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/597e3572c/4ab3b9337a0146a7a792ecb158abf47b [2020-09-25 07:50:38,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:50:38,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:50:38,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:38,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:50:38,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:50:38,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:38" (1/1) ... [2020-09-25 07:50:38,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:38, skipping insertion in model container [2020-09-25 07:50:38,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:38" (1/1) ... [2020-09-25 07:50:38,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:50:38,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:50:39,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:39,112 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:50:39,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:39,349 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:50:39,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:39 WrapperNode [2020-09-25 07:50:39,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:39,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:50:39,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:50:39,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:50:39,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:39" (1/1) ... [2020-09-25 07:50:39,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:39" (1/1) ... [2020-09-25 07:50:39,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:39" (1/1) ... [2020-09-25 07:50:39,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:39" (1/1) ... [2020-09-25 07:50:39,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:39" (1/1) ... [2020-09-25 07:50:39,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:39" (1/1) ... [2020-09-25 07:50:39,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:39" (1/1) ... [2020-09-25 07:50:39,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:50:39,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:50:39,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:50:39,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:50:39,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:39" (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 07:50:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:50:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:50:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:50:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:50:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:50:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:50:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:50:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:50:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:50:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:50:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:50:40,901 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:50:40,901 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:50:40,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:40 BoogieIcfgContainer [2020-09-25 07:50:40,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:50:40,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:50:40,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:50:40,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:50:40,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:50:38" (1/3) ... [2020-09-25 07:50:40,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:40, skipping insertion in model container [2020-09-25 07:50:40,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:39" (2/3) ... [2020-09-25 07:50:40,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:40, skipping insertion in model container [2020-09-25 07:50:40,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:40" (3/3) ... [2020-09-25 07:50:40,921 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-25 07:50:40,933 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:50:40,945 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:50:40,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:50:41,002 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:50:41,002 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:50:41,002 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:50:41,002 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:50:41,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:50:41,003 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:50:41,003 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:50:41,003 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:50:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:50:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 07:50:41,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:41,057 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] [2020-09-25 07:50:41,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:41,066 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-25 07:50:41,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:41,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 07:50:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:41,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:41,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:42,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:44,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:45,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:45,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:46,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:46,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 07:50:46,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:50:46,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:50:46,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:46,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:50:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:50:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 07:50:46,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:50:46,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:46,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:46,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:46,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:50:46,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:50:46,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:46,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:50:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:46,589 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 07:50:46,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 07:50:46,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:46,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:46,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863416720] [2020-09-25 07:50:46,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:46,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:46,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:46,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:46,623 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:50:48,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:48,780 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 07:50:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:50:48,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 07:50:48,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:48,826 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 07:50:48,827 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 07:50:48,841 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 07:50:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 07:50:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 07:50:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 07:50:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 07:50:48,951 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 122 [2020-09-25 07:50:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:48,952 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 07:50:48,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:48,952 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 07:50:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 07:50:48,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:48,963 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] [2020-09-25 07:50:48,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:50:48,964 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:48,965 INFO L82 PathProgramCache]: Analyzing trace with hash -329610872, now seen corresponding path program 1 times [2020-09-25 07:50:48,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:48,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932361872] [2020-09-25 07:50:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:49,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:51,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:51,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 07:50:51,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:50:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2108 [2020-09-25 07:50:51,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:51,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:50:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 07:50:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:51,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:50:51,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:50:51,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:51,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:51,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:50:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:51,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:51,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:51,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:50:51,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:51,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:50:51,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:51,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:50:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:51,396 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 07:50:51,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932361872] [2020-09-25 07:50:51,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:51,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:50:51,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507723916] [2020-09-25 07:50:51,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:50:51,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:51,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:50:51,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:50:51,401 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 07:50:53,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:53,431 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 07:50:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:50:53,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 07:50:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:53,443 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 07:50:53,443 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 07:50:53,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 07:50:53,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 07:50:53,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 07:50:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 07:50:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 07:50:53,494 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 143 [2020-09-25 07:50:53,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:53,494 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 07:50:53,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:50:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 07:50:53,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 07:50:53,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:53,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:50:53,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:50:53,503 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:53,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1723591899, now seen corresponding path program 1 times [2020-09-25 07:50:53,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:53,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396689246] [2020-09-25 07:50:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:54,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:54,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:58,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:58,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 07:50:58,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:50:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 07:50:58,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:58,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:50:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:50:58,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:58,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:58,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:50:58,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:58,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:50:58,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:58,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:58,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:50:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:58,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:58,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:50:58,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:58,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:50:58,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:58,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:58,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:58,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:50:58,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:58,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:50:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:58,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:58,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:58,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:50:58,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:58,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:50:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:50:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:50:58,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396689246] [2020-09-25 07:50:58,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:58,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:50:58,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161268915] [2020-09-25 07:50:58,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:50:58,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:58,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:50:58,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:50:58,811 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 7 states. [2020-09-25 07:51:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:01,681 INFO L93 Difference]: Finished difference Result 3199 states and 4128 transitions. [2020-09-25 07:51:01,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:51:01,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 07:51:01,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:01,712 INFO L225 Difference]: With dead ends: 3199 [2020-09-25 07:51:01,713 INFO L226 Difference]: Without dead ends: 2273 [2020-09-25 07:51:01,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:51:01,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-09-25 07:51:01,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2112. [2020-09-25 07:51:01,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-09-25 07:51:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2643 transitions. [2020-09-25 07:51:01,846 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2643 transitions. Word has length 160 [2020-09-25 07:51:01,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:01,847 INFO L479 AbstractCegarLoop]: Abstraction has 2112 states and 2643 transitions. [2020-09-25 07:51:01,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:01,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2643 transitions. [2020-09-25 07:51:01,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 07:51:01,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:01,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:01,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:51:01,873 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:01,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:01,873 INFO L82 PathProgramCache]: Analyzing trace with hash -2123224051, now seen corresponding path program 1 times [2020-09-25 07:51:01,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:01,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690586253] [2020-09-25 07:51:01,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:04,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:06,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:06,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 07:51:06,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:51:06,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:51:06,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:06,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:51:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:51:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:07,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:07,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:07,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:07,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:07,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:07,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:51:07,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:07,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:07,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:07,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:07,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:07,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:07,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:07,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:07,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:07,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:07,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:51:07,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:07,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:51:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:07,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:51:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:07,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:07,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:07,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:07,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 07:51:07,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:07,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:51:07,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:07,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690586253] [2020-09-25 07:51:07,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:07,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:07,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655188413] [2020-09-25 07:51:07,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:07,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:07,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:07,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:07,223 INFO L87 Difference]: Start difference. First operand 2112 states and 2643 transitions. Second operand 7 states. [2020-09-25 07:51:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:09,665 INFO L93 Difference]: Finished difference Result 4718 states and 6076 transitions. [2020-09-25 07:51:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:51:09,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-25 07:51:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:09,689 INFO L225 Difference]: With dead ends: 4718 [2020-09-25 07:51:09,690 INFO L226 Difference]: Without dead ends: 2640 [2020-09-25 07:51:09,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:51:09,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2020-09-25 07:51:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2310. [2020-09-25 07:51:09,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2020-09-25 07:51:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 2809 transitions. [2020-09-25 07:51:09,810 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 2809 transitions. Word has length 174 [2020-09-25 07:51:09,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:09,812 INFO L479 AbstractCegarLoop]: Abstraction has 2310 states and 2809 transitions. [2020-09-25 07:51:09,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:09,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 2809 transitions. [2020-09-25 07:51:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 07:51:09,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:09,826 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:09,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:51:09,827 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:09,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:09,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1953830612, now seen corresponding path program 1 times [2020-09-25 07:51:09,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:09,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863576494] [2020-09-25 07:51:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:13,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:14,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 07:51:14,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:51:14,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:51:14,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:14,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 07:51:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 07:51:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:15,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:15,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:15,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:15,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:15,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:51:15,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:15,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:15,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:15,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:15,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:15,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:15,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:51:15,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:51:15,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:15,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:15,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:51:15,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:51:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:15,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:15,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:15,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:15,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:51:15,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 07:51:15,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:15,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:15,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:15,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:51:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 07:51:15,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863576494] [2020-09-25 07:51:15,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:15,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:15,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407949304] [2020-09-25 07:51:15,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:15,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:15,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:15,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:15,289 INFO L87 Difference]: Start difference. First operand 2310 states and 2809 transitions. Second operand 5 states. [2020-09-25 07:51:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:16,840 INFO L93 Difference]: Finished difference Result 6184 states and 7706 transitions. [2020-09-25 07:51:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:16,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 07:51:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:16,864 INFO L225 Difference]: With dead ends: 6184 [2020-09-25 07:51:16,865 INFO L226 Difference]: Without dead ends: 3908 [2020-09-25 07:51:16,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 07:51:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2020-09-25 07:51:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3470. [2020-09-25 07:51:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3470 states. [2020-09-25 07:51:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3470 states to 3470 states and 4327 transitions. [2020-09-25 07:51:16,986 INFO L78 Accepts]: Start accepts. Automaton has 3470 states and 4327 transitions. Word has length 181 [2020-09-25 07:51:16,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:16,987 INFO L479 AbstractCegarLoop]: Abstraction has 3470 states and 4327 transitions. [2020-09-25 07:51:16,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3470 states and 4327 transitions. [2020-09-25 07:51:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 07:51:17,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:17,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:51:17,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:51:17,006 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash 517236024, now seen corresponding path program 1 times [2020-09-25 07:51:17,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:17,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8382256] [2020-09-25 07:51:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:17,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:18,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:20,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:20,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 07:51:22,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:51:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:51:22,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:51:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 07:51:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:51:22,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:22,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:22,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:51:22,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:22,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:22,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:22,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:51:22,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:51:22,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:22,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:22,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:51:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:51:22,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 07:51:22,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:51:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:51:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 07:51:22,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8382256] [2020-09-25 07:51:22,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:22,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:51:22,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472640432] [2020-09-25 07:51:22,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:51:22,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:22,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:51:22,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:51:22,703 INFO L87 Difference]: Start difference. First operand 3470 states and 4327 transitions. Second operand 10 states. [2020-09-25 07:51:26,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:26,699 INFO L93 Difference]: Finished difference Result 7811 states and 9859 transitions. [2020-09-25 07:51:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:51:26,699 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 187 [2020-09-25 07:51:26,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:26,722 INFO L225 Difference]: With dead ends: 7811 [2020-09-25 07:51:26,722 INFO L226 Difference]: Without dead ends: 4119 [2020-09-25 07:51:26,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:51:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2020-09-25 07:51:26,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 3952. [2020-09-25 07:51:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3952 states. [2020-09-25 07:51:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 4858 transitions. [2020-09-25 07:51:26,870 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 4858 transitions. Word has length 187 [2020-09-25 07:51:26,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:26,870 INFO L479 AbstractCegarLoop]: Abstraction has 3952 states and 4858 transitions. [2020-09-25 07:51:26,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:51:26,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 4858 transitions. [2020-09-25 07:51:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 07:51:26,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:26,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:51:26,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:51:26,895 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:26,896 INFO L82 PathProgramCache]: Analyzing trace with hash 135215777, now seen corresponding path program 1 times [2020-09-25 07:51:26,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:26,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875697782] [2020-09-25 07:51:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking...