/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 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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:22:31,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:22:31,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:22:31,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:22:31,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:22:31,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:22:31,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:22:31,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:22:31,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:22:31,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:22:31,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:22:31,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:22:31,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:22:31,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:22:32,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:22:32,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:22:32,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:22:32,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:22:32,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:22:32,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:22:32,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:22:32,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:22:32,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:22:32,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:22:32,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:22:32,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:22:32,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:22:32,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:22:32,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:22:32,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:22:32,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:22:32,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:22:32,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:22:32,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:22:32,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:22:32,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:22:32,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:22:32,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:22:32,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:22:32,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:22:32,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:22:32,029 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 [2020-09-24 17:22:32,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:22:32,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:22:32,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:22:32,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:22:32,059 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:22:32,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:22:32,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:22:32,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:22:32,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:22:32,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:22:32,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:22:32,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:22:32,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:22:32,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:22:32,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:22:32,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:22:32,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:22:32,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:22:32,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:22:32,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:22:32,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:22:32,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:22:32,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:22:32,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:22:32,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:22:32,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:22:32,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:22:32,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:22:32,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:22:32,064 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;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;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;log-additional-information=true; [2020-09-24 17:22:32,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:22:32,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:22:32,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:22:32,547 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:22:32,548 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:22:32,549 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-09-24 17:22:32,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f5f96f5f/7245a880057f42cd878a92dadd230a30/FLAG358d56b49 [2020-09-24 17:22:33,206 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:22:33,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-09-24 17:22:33,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f5f96f5f/7245a880057f42cd878a92dadd230a30/FLAG358d56b49 [2020-09-24 17:22:33,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f5f96f5f/7245a880057f42cd878a92dadd230a30 [2020-09-24 17:22:33,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:22:33,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:22:33,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:22:33,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:22:33,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:22:33,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:22:33" (1/1) ... [2020-09-24 17:22:33,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a9dd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:33, skipping insertion in model container [2020-09-24 17:22:33,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:22:33" (1/1) ... [2020-09-24 17:22:33,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:22:33,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:22:33,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:22:33,994 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:22:34,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:22:34,210 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:22:34,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:34 WrapperNode [2020-09-24 17:22:34,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:22:34,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:22:34,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:22:34,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:22:34,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:34" (1/1) ... [2020-09-24 17:22:34,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:34" (1/1) ... [2020-09-24 17:22:34,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:34" (1/1) ... [2020-09-24 17:22:34,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:34" (1/1) ... [2020-09-24 17:22:34,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:34" (1/1) ... [2020-09-24 17:22:34,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:34" (1/1) ... [2020-09-24 17:22:34,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:34" (1/1) ... [2020-09-24 17:22:34,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:22:34,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:22:34,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:22:34,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:22:34,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:34" (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 [2020-09-24 17:22:34,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:22:34,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:22:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:22:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:22:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-24 17:22:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-24 17:22:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:22:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:22:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:22:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:22:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:22:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 17:22:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:22:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:22:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:22:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:22:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:22:35,745 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:22:35,745 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:22:35,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:22:35 BoogieIcfgContainer [2020-09-24 17:22:35,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:22:35,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:22:35,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:22:35,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:22:35,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:22:33" (1/3) ... [2020-09-24 17:22:35,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6078beff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:22:35, skipping insertion in model container [2020-09-24 17:22:35,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:34" (2/3) ... [2020-09-24 17:22:35,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6078beff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:22:35, skipping insertion in model container [2020-09-24 17:22:35,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:22:35" (3/3) ... [2020-09-24 17:22:35,766 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2020-09-24 17:22:35,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:22:35,788 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:22:35,810 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:22:35,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:22:35,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:22:35,848 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:22:35,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:22:35,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:22:35,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:22:35,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:22:35,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:22:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states. [2020-09-24 17:22:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-09-24 17:22:35,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:35,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:35,916 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:35,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:35,924 INFO L82 PathProgramCache]: Analyzing trace with hash -378957588, now seen corresponding path program 1 times [2020-09-24 17:22:35,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:35,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053654025] [2020-09-24 17:22:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:39,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:44,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:49,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:58,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking...