/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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:40:49,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:40:49,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:40:49,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:40:49,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:40:49,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:40:49,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:40:49,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:40:49,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:40:49,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:40:49,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:40:49,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:40:49,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:40:49,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:40:49,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:40:49,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:40:49,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:40:49,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:40:49,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:40:49,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:40:49,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:40:49,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:40:49,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:40:49,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:40:49,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:40:49,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:40:49,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:40:49,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:40:49,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:40:49,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:40:49,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:40:49,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:40:49,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:40:49,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:40:49,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:40:49,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:40:49,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:40:49,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:40:49,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:40:49,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:40:49,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:40:49,571 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 13:40:49,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:40:49,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:40:49,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:40:49,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:40:49,621 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:40:49,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:40:49,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:40:49,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:40:49,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:40:49,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:40:49,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:40:49,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:40:49,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:40:49,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:40:49,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:40:49,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:40:49,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:40:49,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:40:49,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:40:49,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:40:49,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:40:49,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:40:49,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:40:49,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:40:49,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:40:49,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:40:49,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:40:49,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:40:49,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:40:49,626 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 13:40:50,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:40:50,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:40:50,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:40:50,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:40:50,167 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:40:50,168 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-09-25 13:40:50,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ff7f80be/add68aa67734480db7064e8b9e7bdeff/FLAG81a211c8b [2020-09-25 13:40:50,896 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:40:50,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-09-25 13:40:50,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ff7f80be/add68aa67734480db7064e8b9e7bdeff/FLAG81a211c8b [2020-09-25 13:40:51,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ff7f80be/add68aa67734480db7064e8b9e7bdeff [2020-09-25 13:40:51,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:40:51,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:40:51,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:40:51,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:40:51,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:40:51,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:40:51" (1/1) ... [2020-09-25 13:40:51,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd36ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51, skipping insertion in model container [2020-09-25 13:40:51,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:40:51" (1/1) ... [2020-09-25 13:40:51,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:40:51,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:40:51,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:40:51,681 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:40:51,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:40:51,880 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:40:51,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51 WrapperNode [2020-09-25 13:40:51,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:40:51,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:40:51,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:40:51,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:40:51,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51" (1/1) ... [2020-09-25 13:40:51,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51" (1/1) ... [2020-09-25 13:40:51,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51" (1/1) ... [2020-09-25 13:40:51,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51" (1/1) ... [2020-09-25 13:40:51,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51" (1/1) ... [2020-09-25 13:40:51,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51" (1/1) ... [2020-09-25 13:40:51,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51" (1/1) ... [2020-09-25 13:40:51,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:40:51,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:40:51,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:40:51,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:40:51,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51" (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 13:40:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:40:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:40:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:40:52,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:40:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-25 13:40:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-25 13:40:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:40:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:40:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:40:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:40:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:40:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 13:40:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:40:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:40:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:40:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:40:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:40:53,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:40:53,016 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:40:53,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:40:53 BoogieIcfgContainer [2020-09-25 13:40:53,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:40:53,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:40:53,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:40:53,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:40:53,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:40:51" (1/3) ... [2020-09-25 13:40:53,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473ec200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:40:53, skipping insertion in model container [2020-09-25 13:40:53,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:51" (2/3) ... [2020-09-25 13:40:53,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473ec200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:40:53, skipping insertion in model container [2020-09-25 13:40:53,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:40:53" (3/3) ... [2020-09-25 13:40:53,037 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2020-09-25 13:40:53,049 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:40:53,060 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:40:53,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:40:53,138 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:40:53,139 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:40:53,139 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:40:53,139 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:40:53,139 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:40:53,139 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:40:53,140 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:40:53,140 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:40:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states. [2020-09-25 13:40:53,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-25 13:40:53,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:53,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:40:53,212 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:53,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:53,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1683722235, now seen corresponding path program 1 times [2020-09-25 13:40:53,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:53,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042793737] [2020-09-25 13:40:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:53,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:54,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:54,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-09-25 13:40:54,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-09-25 13:40:54,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:54,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:40:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 13:40:54,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:54,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:40:54,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:55,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:55,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:55,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:40:55,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 13:40:55,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:55,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:55,236 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 13:40:55,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042793737] [2020-09-25 13:40:55,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:55,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:40:55,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281684376] [2020-09-25 13:40:55,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:40:55,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:55,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:40:55,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:40:55,279 INFO L87 Difference]: Start difference. First operand 363 states. Second operand 5 states. [2020-09-25 13:40:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:56,138 INFO L93 Difference]: Finished difference Result 416 states and 424 transitions. [2020-09-25 13:40:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:40:56,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-09-25 13:40:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:56,162 INFO L225 Difference]: With dead ends: 416 [2020-09-25 13:40:56,162 INFO L226 Difference]: Without dead ends: 349 [2020-09-25 13:40:56,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:40:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-25 13:40:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 335. [2020-09-25 13:40:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-09-25 13:40:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2020-09-25 13:40:56,245 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 317 [2020-09-25 13:40:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:56,248 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2020-09-25 13:40:56,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:40:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2020-09-25 13:40:56,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-09-25 13:40:56,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:56,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:40:56,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:40:56,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash 346805738, now seen corresponding path program 1 times [2020-09-25 13:40:56,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:56,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825809878] [2020-09-25 13:40:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:57,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:59,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:59,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-09-25 13:40:59,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:59,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2702 [2020-09-25 13:40:59,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:59,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:40:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 13:40:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:40:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:40:59,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:59,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:59,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:59,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:40:59,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:59,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:40:59,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:59,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:59,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:59,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:59,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:59,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:59,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825809878] [2020-09-25 13:40:59,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:59,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:40:59,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780916967] [2020-09-25 13:40:59,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:40:59,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:59,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:40:59,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:40:59,451 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 6 states. [2020-09-25 13:41:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:00,460 INFO L93 Difference]: Finished difference Result 374 states and 374 transitions. [2020-09-25 13:41:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:41:00,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 334 [2020-09-25 13:41:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:00,465 INFO L225 Difference]: With dead ends: 374 [2020-09-25 13:41:00,465 INFO L226 Difference]: Without dead ends: 366 [2020-09-25 13:41:00,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:41:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-09-25 13:41:00,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 352. [2020-09-25 13:41:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-09-25 13:41:00,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2020-09-25 13:41:00,487 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 334 [2020-09-25 13:41:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:00,488 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2020-09-25 13:41:00,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:41:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2020-09-25 13:41:00,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-09-25 13:41:00,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:00,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:00,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:41:00,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:00,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:00,498 INFO L82 PathProgramCache]: Analyzing trace with hash -461354021, now seen corresponding path program 2 times [2020-09-25 13:41:00,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:00,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279413818] [2020-09-25 13:41:00,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:02,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-09-25 13:41:05,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:41:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:41:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:41:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 13:41:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:41:05,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:05,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:41:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:41:05,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:41:05,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:41:05,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279413818] [2020-09-25 13:41:05,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:41:05,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:41:05,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334494355] [2020-09-25 13:41:05,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:41:05,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:41:05,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:41:05,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:41:05,985 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 7 states. [2020-09-25 13:41:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:07,165 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2020-09-25 13:41:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:41:07,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-09-25 13:41:07,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:07,170 INFO L225 Difference]: With dead ends: 391 [2020-09-25 13:41:07,170 INFO L226 Difference]: Without dead ends: 383 [2020-09-25 13:41:07,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:41:07,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-09-25 13:41:07,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 369. [2020-09-25 13:41:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-09-25 13:41:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2020-09-25 13:41:07,188 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 351 [2020-09-25 13:41:07,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:07,189 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2020-09-25 13:41:07,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:41:07,190 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2020-09-25 13:41:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-25 13:41:07,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:07,201 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:07,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:41:07,201 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:07,202 INFO L82 PathProgramCache]: Analyzing trace with hash -254126582, now seen corresponding path program 3 times [2020-09-25 13:41:07,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:07,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575388910] [2020-09-25 13:41:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:07,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:13,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:13,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-09-25 13:41:13,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:41:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5793 [2020-09-25 13:41:13,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:13,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:13,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:41:13,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 13:41:13,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 13:41:13,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:13,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:41:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:13,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:13,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:41:13,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:41:13,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:13,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:13,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:41:13,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575388910] [2020-09-25 13:41:13,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:41:13,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:41:13,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265154612] [2020-09-25 13:41:13,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:41:13,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:41:13,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:41:13,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:41:13,492 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 8 states. [2020-09-25 13:41:14,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:14,574 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2020-09-25 13:41:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:41:14,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 368 [2020-09-25 13:41:14,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:14,578 INFO L225 Difference]: With dead ends: 408 [2020-09-25 13:41:14,578 INFO L226 Difference]: Without dead ends: 400 [2020-09-25 13:41:14,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:41:14,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-09-25 13:41:14,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 386. [2020-09-25 13:41:14,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-25 13:41:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2020-09-25 13:41:14,593 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 368 [2020-09-25 13:41:14,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:14,593 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2020-09-25 13:41:14,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:41:14,594 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2020-09-25 13:41:14,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-09-25 13:41:14,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:14,601 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:14,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:41:14,602 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:14,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:14,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1386344517, now seen corresponding path program 4 times [2020-09-25 13:41:14,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:14,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178378674] [2020-09-25 13:41:14,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:14,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:15,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:17,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:20,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:20,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-09-25 13:41:20,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:41:20,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5805 [2020-09-25 13:41:20,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:20,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:20,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:41:20,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 13:41:20,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:41:20,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:41:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:20,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:20,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:20,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:41:20,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:20,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:41:20,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:20,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:20,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:20,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:20,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:41:20,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178378674] [2020-09-25 13:41:20,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:41:20,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:41:20,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404990594] [2020-09-25 13:41:20,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:41:20,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:41:20,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:41:20,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:41:20,848 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 9 states. [2020-09-25 13:41:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:22,165 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2020-09-25 13:41:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:41:22,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 385 [2020-09-25 13:41:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:22,169 INFO L225 Difference]: With dead ends: 425 [2020-09-25 13:41:22,170 INFO L226 Difference]: Without dead ends: 417 [2020-09-25 13:41:22,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:41:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-25 13:41:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 403. [2020-09-25 13:41:22,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-09-25 13:41:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2020-09-25 13:41:22,182 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 385 [2020-09-25 13:41:22,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:22,183 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2020-09-25 13:41:22,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:41:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2020-09-25 13:41:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-09-25 13:41:22,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:22,186 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:22,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:41:22,187 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:22,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:22,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2088816170, now seen corresponding path program 5 times [2020-09-25 13:41:22,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:22,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485968764] [2020-09-25 13:41:22,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:24,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:27,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:27,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:27,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-09-25 13:41:27,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:41:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5258 [2020-09-25 13:41:27,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:27,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:27,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:41:27,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 13:41:27,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 13:41:27,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:27,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:41:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:27,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:27,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:41:27,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:27,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:41:27,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:27,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:27,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:27,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:27,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:41:27,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485968764] [2020-09-25 13:41:27,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:41:27,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:41:27,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504751778] [2020-09-25 13:41:27,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:41:27,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:41:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:41:27,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:41:27,932 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 10 states. [2020-09-25 13:41:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:29,341 INFO L93 Difference]: Finished difference Result 442 states and 442 transitions. [2020-09-25 13:41:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:41:29,341 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 402 [2020-09-25 13:41:29,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:29,345 INFO L225 Difference]: With dead ends: 442 [2020-09-25 13:41:29,345 INFO L226 Difference]: Without dead ends: 434 [2020-09-25 13:41:29,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:41:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-09-25 13:41:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 420. [2020-09-25 13:41:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-09-25 13:41:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 420 transitions. [2020-09-25 13:41:29,358 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 420 transitions. Word has length 402 [2020-09-25 13:41:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:29,359 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 420 transitions. [2020-09-25 13:41:29,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:41:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 420 transitions. [2020-09-25 13:41:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-09-25 13:41:29,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:29,363 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:29,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:41:29,363 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:29,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:29,364 INFO L82 PathProgramCache]: Analyzing trace with hash 380820379, now seen corresponding path program 6 times [2020-09-25 13:41:29,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:29,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770070104] [2020-09-25 13:41:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:29,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:30,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:33,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:34,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:34,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-09-25 13:41:34,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:41:34,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-09-25 13:41:34,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:34,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:41:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 13:41:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 13:41:34,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:34,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:41:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:34,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:34,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:34,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:41:34,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:41:34,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:34,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:34,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:41:34,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770070104] [2020-09-25 13:41:34,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:41:34,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:41:34,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602207953] [2020-09-25 13:41:34,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:41:34,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:41:34,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:41:34,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:41:34,912 INFO L87 Difference]: Start difference. First operand 420 states and 420 transitions. Second operand 11 states. [2020-09-25 13:41:36,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:36,428 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2020-09-25 13:41:36,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:41:36,429 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 419 [2020-09-25 13:41:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:36,433 INFO L225 Difference]: With dead ends: 459 [2020-09-25 13:41:36,433 INFO L226 Difference]: Without dead ends: 451 [2020-09-25 13:41:36,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:41:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-25 13:41:36,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 437. [2020-09-25 13:41:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-09-25 13:41:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-09-25 13:41:36,445 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 419 [2020-09-25 13:41:36,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:36,446 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-09-25 13:41:36,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:41:36,447 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-09-25 13:41:36,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-09-25 13:41:36,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:36,450 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:36,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:41:36,450 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:36,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:36,451 INFO L82 PathProgramCache]: Analyzing trace with hash 329334346, now seen corresponding path program 7 times [2020-09-25 13:41:36,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:36,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303190409] [2020-09-25 13:41:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:36,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:37,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking...