/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:16:28,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:16:28,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:16:28,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:16:28,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:16:28,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:16:28,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:16:28,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:16:28,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:16:28,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:16:28,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:16:28,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:16:28,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:16:28,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:16:28,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:16:28,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:16:28,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:16:28,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:16:28,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:16:28,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:16:28,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:16:28,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:16:28,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:16:28,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:16:28,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:16:28,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:16:28,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:16:28,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:16:28,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:16:28,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:16:28,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:16:28,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:16:28,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:16:28,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:16:28,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:16:28,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:16:28,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:16:28,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:16:28,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:16:28,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:16:28,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:16:28,203 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 11:16:28,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:16:28,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:16:28,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:16:28,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:16:28,271 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:16:28,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:16:28,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:16:28,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:16:28,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:16:28,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:16:28,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:16:28,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:16:28,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:16:28,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:16:28,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:16:28,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:16:28,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:16:28,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:16:28,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:16:28,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:16:28,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:16:28,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:16:28,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:16:28,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:16:28,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:16:28,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:16:28,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:16:28,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:16:28,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:16:28,279 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:16:28,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:16:28,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:16:28,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:16:28,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:16:28,824 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:16:28,826 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label26.c [2020-09-25 11:16:28,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1705338ff/605a94a300e9417795b0d75e73531b9f/FLAGc9ce0f81a [2020-09-25 11:16:29,641 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:16:29,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label26.c [2020-09-25 11:16:29,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1705338ff/605a94a300e9417795b0d75e73531b9f/FLAGc9ce0f81a [2020-09-25 11:16:29,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1705338ff/605a94a300e9417795b0d75e73531b9f [2020-09-25 11:16:29,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:16:29,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:16:29,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:29,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:16:29,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:16:29,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:29" (1/1) ... [2020-09-25 11:16:29,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:29, skipping insertion in model container [2020-09-25 11:16:29,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:29" (1/1) ... [2020-09-25 11:16:29,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:16:29,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:16:30,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:30,485 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:16:30,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:30,773 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:16:30,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30 WrapperNode [2020-09-25 11:16:30,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:30,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:16:30,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:16:30,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:16:30,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:16:30,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:16:30,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:16:30,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:16:30,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (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 11:16:31,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:16:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:16:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:16:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:16:31,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:16:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:16:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:16:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:16:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:16:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:16:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:16:32,452 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:16:32,452 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:16:32,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:32 BoogieIcfgContainer [2020-09-25 11:16:32,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:16:32,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:16:32,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:16:32,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:16:32,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:16:29" (1/3) ... [2020-09-25 11:16:32,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:32, skipping insertion in model container [2020-09-25 11:16:32,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (2/3) ... [2020-09-25 11:16:32,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:32, skipping insertion in model container [2020-09-25 11:16:32,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:32" (3/3) ... [2020-09-25 11:16:32,485 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label26.c [2020-09-25 11:16:32,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:16:32,516 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:16:32,540 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:16:32,583 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:16:32,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:16:32,583 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:16:32,584 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:16:32,584 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:16:32,584 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:16:32,584 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:16:32,584 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:16:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:16:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 11:16:32,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:32,646 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] [2020-09-25 11:16:32,647 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:32,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:32,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1114585457, now seen corresponding path program 1 times [2020-09-25 11:16:32,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:32,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 11:16:32,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:33,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:36,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:37,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:37,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:38,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:38,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 11:16:38,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:16:38,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 11:16:38,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:38,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:16:38,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 11:16:38,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 11:16:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:38,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:38,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:38,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:38,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 11:16:38,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:38,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:16:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:38,359 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 11:16:38,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 11:16:38,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:16:38,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:16:38,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654041095] [2020-09-25 11:16:38,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:16:38,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:38,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:16:38,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:16:38,392 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:16:40,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:40,620 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 11:16:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:16:40,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-09-25 11:16:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:40,668 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 11:16:40,668 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 11:16:40,677 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 11:16:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 11:16:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 11:16:40,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 11:16:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 11:16:40,811 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 162 [2020-09-25 11:16:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:40,815 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 11:16:40,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:16:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 11:16:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 11:16:40,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:40,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:40,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:16:40,846 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:40,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:40,847 INFO L82 PathProgramCache]: Analyzing trace with hash 156587372, now seen corresponding path program 1 times [2020-09-25 11:16:40,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:40,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3414653] [2020-09-25 11:16:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:40,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:42,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:44,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:45,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:45,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:45,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:45,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 11:16:45,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:16:45,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 11:16:45,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:45,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:45,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:45,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 11:16:45,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 11:16:45,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 11:16:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:46,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:46,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:46,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:16:46,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:46,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:16:46,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:46,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:46,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:16:46,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:46,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:16:46,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:46,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:16:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:46,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3414653] [2020-09-25 11:16:46,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:46,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:16:46,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533338552] [2020-09-25 11:16:46,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:16:46,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:46,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:16:46,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:16:46,387 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 6 states. [2020-09-25 11:16:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:49,402 INFO L93 Difference]: Finished difference Result 1906 states and 2524 transitions. [2020-09-25 11:16:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:16:49,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2020-09-25 11:16:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:49,412 INFO L225 Difference]: With dead ends: 1906 [2020-09-25 11:16:49,412 INFO L226 Difference]: Without dead ends: 1315 [2020-09-25 11:16:49,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:16:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-09-25 11:16:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1102. [2020-09-25 11:16:49,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-09-25 11:16:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1339 transitions. [2020-09-25 11:16:49,484 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1339 transitions. Word has length 196 [2020-09-25 11:16:49,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:49,486 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1339 transitions. [2020-09-25 11:16:49,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:16:49,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1339 transitions. [2020-09-25 11:16:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 11:16:49,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:49,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:49,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:16:49,495 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:49,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:49,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1036654265, now seen corresponding path program 1 times [2020-09-25 11:16:49,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:49,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830439965] [2020-09-25 11:16:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:49,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:50,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:52,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:54,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:54,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:54,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:54,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 11:16:54,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:16:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:16:54,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:54,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 11:16:54,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 11:16:54,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:54,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:54,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:54,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:54,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:16:54,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:54,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:54,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:54,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:54,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:16:54,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:54,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:16:54,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:54,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:54,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:16:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:54,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830439965] [2020-09-25 11:16:54,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:54,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:16:54,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158888187] [2020-09-25 11:16:54,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:16:54,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:54,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:16:54,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:16:54,875 INFO L87 Difference]: Start difference. First operand 1102 states and 1339 transitions. Second operand 5 states. [2020-09-25 11:16:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:56,859 INFO L93 Difference]: Finished difference Result 2806 states and 3519 transitions. [2020-09-25 11:16:56,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:16:56,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-09-25 11:16:56,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:56,876 INFO L225 Difference]: With dead ends: 2806 [2020-09-25 11:16:56,876 INFO L226 Difference]: Without dead ends: 1024 [2020-09-25 11:16:56,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:16:56,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-25 11:16:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1002. [2020-09-25 11:16:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-09-25 11:16:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1178 transitions. [2020-09-25 11:16:56,932 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1178 transitions. Word has length 200 [2020-09-25 11:16:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:56,933 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1178 transitions. [2020-09-25 11:16:56,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:16:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1178 transitions. [2020-09-25 11:16:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 11:16:56,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:56,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:56,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:16:56,949 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:56,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:56,950 INFO L82 PathProgramCache]: Analyzing trace with hash 375157522, now seen corresponding path program 1 times [2020-09-25 11:16:56,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:56,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571119343] [2020-09-25 11:16:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:57,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:00,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:02,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 11:17:02,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:17:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:17:02,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:02,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:17:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-09-25 11:17:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:02,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:02,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:02,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:02,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:02,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:17:02,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:02,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:02,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:02,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:02,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:17:02,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:02,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 11:17:02,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:02,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:17:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:17:02,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 11:17:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:02,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:02,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:17:02,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:02,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 11:17:02,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:02,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:17:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:02,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:17:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:17:02,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571119343] [2020-09-25 11:17:02,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:02,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:17:02,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139555229] [2020-09-25 11:17:02,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:17:02,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:02,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:17:02,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:17:02,871 INFO L87 Difference]: Start difference. First operand 1002 states and 1178 transitions. Second operand 12 states. [2020-09-25 11:17:03,397 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-09-25 11:17:04,933 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-09-25 11:17:06,407 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-09-25 11:17:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:07,462 INFO L93 Difference]: Finished difference Result 2568 states and 3146 transitions. [2020-09-25 11:17:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:17:07,462 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 226 [2020-09-25 11:17:07,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:07,470 INFO L225 Difference]: With dead ends: 2568 [2020-09-25 11:17:07,470 INFO L226 Difference]: Without dead ends: 1325 [2020-09-25 11:17:07,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:17:07,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-09-25 11:17:07,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1291. [2020-09-25 11:17:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-09-25 11:17:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1490 transitions. [2020-09-25 11:17:07,526 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1490 transitions. Word has length 226 [2020-09-25 11:17:07,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:07,526 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1490 transitions. [2020-09-25 11:17:07,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:17:07,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1490 transitions. [2020-09-25 11:17:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 11:17:07,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:07,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:07,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:17:07,534 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:07,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:07,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1180104890, now seen corresponding path program 1 times [2020-09-25 11:17:07,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:07,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467180533] [2020-09-25 11:17:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:07,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:08,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:12,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-25 11:17:12,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:17:12,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 11:17:12,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:12,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:12,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:17:12,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 11:17:12,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-25 11:17:12,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:12,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:12,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:12,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:12,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:17:12,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:12,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:12,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:13,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:17:13,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 11:17:13,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:13,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:17:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 11:17:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:13,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:13,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:17:13,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 11:17:13,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:13,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:17:13,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:17:13,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467180533] [2020-09-25 11:17:13,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:13,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:17:13,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258361978] [2020-09-25 11:17:13,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:17:13,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:13,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:17:13,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:17:13,532 INFO L87 Difference]: Start difference. First operand 1291 states and 1490 transitions. Second operand 11 states.