/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:39:48,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:39:48,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:39:48,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:39:48,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:39:48,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:39:48,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:39:48,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:39:48,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:39:48,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:39:48,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:39:48,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:39:48,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:39:48,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:39:48,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:39:48,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:39:48,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:39:48,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:39:48,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:39:48,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:39:48,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:39:48,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:39:48,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:39:48,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:39:48,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:39:48,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:39:48,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:39:48,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:39:48,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:39:48,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:39:48,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:39:48,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:39:48,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:39:48,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:39:48,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:39:48,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:39:48,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:39:48,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:39:48,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:39:48,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:39:48,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:39:48,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:39:48,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:39:48,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:39:48,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:39:48,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:39:48,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:39:48,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:39:48,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:39:48,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:39:48,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:39:48,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:39:48,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:39:48,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:39:48,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:39:48,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:39:48,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:39:48,193 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:39:48,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:39:48,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:39:48,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:39:48,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:39:48,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:39:48,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:39:48,194 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:39:48,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:39:48,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:39:48,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:39:48,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:39:48,475 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:39:48,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-07-07 13:39:48,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c62f944/97a3e6fee0784be7a5b4862ea309fb36/FLAG927ddce70 [2020-07-07 13:39:49,108 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:39:49,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-07-07 13:39:49,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c62f944/97a3e6fee0784be7a5b4862ea309fb36/FLAG927ddce70 [2020-07-07 13:39:49,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c62f944/97a3e6fee0784be7a5b4862ea309fb36 [2020-07-07 13:39:49,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:39:49,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:39:49,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:39:49,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:39:49,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:39:49,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:39:49" (1/1) ... [2020-07-07 13:39:49,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5308ee94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:49, skipping insertion in model container [2020-07-07 13:39:49,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:39:49" (1/1) ... [2020-07-07 13:39:49,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:39:49,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:39:49,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:39:49,897 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:39:50,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:39:50,094 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:39:50,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:50 WrapperNode [2020-07-07 13:39:50,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:39:50,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:39:50,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:39:50,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:39:50,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:50" (1/1) ... [2020-07-07 13:39:50,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:50" (1/1) ... [2020-07-07 13:39:50,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:50" (1/1) ... [2020-07-07 13:39:50,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:50" (1/1) ... [2020-07-07 13:39:50,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:50" (1/1) ... [2020-07-07 13:39:50,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:50" (1/1) ... [2020-07-07 13:39:50,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:50" (1/1) ... [2020-07-07 13:39:50,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:39:50,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:39:50,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:39:50,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:39:50,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-07 13:39:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:39:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:39:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-07 13:39:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:39:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-07 13:39:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:39:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:39:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:39:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:39:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:39:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:39:51,678 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:39:51,679 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:39:51,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:39:51 BoogieIcfgContainer [2020-07-07 13:39:51,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:39:51,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:39:51,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:39:51,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:39:51,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:39:49" (1/3) ... [2020-07-07 13:39:51,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50309479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:39:51, skipping insertion in model container [2020-07-07 13:39:51,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:39:50" (2/3) ... [2020-07-07 13:39:51,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50309479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:39:51, skipping insertion in model container [2020-07-07 13:39:51,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:39:51" (3/3) ... [2020-07-07 13:39:51,696 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label43.c [2020-07-07 13:39:51,706 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:39:51,715 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:39:51,730 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:39:51,752 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:39:51,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:39:51,753 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:39:51,753 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:39:51,753 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:39:51,754 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:39:51,754 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:39:51,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:39:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-07-07 13:39:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-07 13:39:51,800 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:39:51,801 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] [2020-07-07 13:39:51,802 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:39:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:39:51,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1883432242, now seen corresponding path program 1 times [2020-07-07 13:39:51,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:39:51,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070518754] [2020-07-07 13:39:51,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:39:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:39:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:39:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:39:52,368 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:39:52,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070518754] [2020-07-07 13:39:52,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:39:52,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:39:52,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041267835] [2020-07-07 13:39:52,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:39:52,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:39:52,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:39:52,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:39:52,399 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-07-07 13:39:55,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:39:55,534 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-07-07 13:39:55,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:39:55,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-07-07 13:39:55,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:39:55,581 INFO L225 Difference]: With dead ends: 1539 [2020-07-07 13:39:55,581 INFO L226 Difference]: Without dead ends: 935 [2020-07-07 13:39:55,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:39:55,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-07-07 13:39:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-07-07 13:39:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-07 13:39:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-07-07 13:39:55,864 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 111 [2020-07-07 13:39:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:39:55,866 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-07-07 13:39:55,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:39:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-07-07 13:39:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-07 13:39:55,881 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:39:55,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:39:55,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:39:55,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:39:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:39:55,883 INFO L82 PathProgramCache]: Analyzing trace with hash -184227746, now seen corresponding path program 1 times [2020-07-07 13:39:55,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:39:55,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553730023] [2020-07-07 13:39:55,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:39:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:39:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:39:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:39:56,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:39:56,158 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:39:56,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553730023] [2020-07-07 13:39:56,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:39:56,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:39:56,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691554628] [2020-07-07 13:39:56,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:39:56,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:39:56,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:39:56,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:39:56,162 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 9 states. [2020-07-07 13:39:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:39:59,820 INFO L93 Difference]: Finished difference Result 3064 states and 4119 transitions. [2020-07-07 13:39:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 13:39:59,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-07-07 13:39:59,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:39:59,843 INFO L225 Difference]: With dead ends: 3064 [2020-07-07 13:39:59,843 INFO L226 Difference]: Without dead ends: 2208 [2020-07-07 13:39:59,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-07-07 13:39:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2020-07-07 13:40:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 1671. [2020-07-07 13:40:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2020-07-07 13:40:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2025 transitions. [2020-07-07 13:40:00,116 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2025 transitions. Word has length 129 [2020-07-07 13:40:00,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:40:00,116 INFO L479 AbstractCegarLoop]: Abstraction has 1671 states and 2025 transitions. [2020-07-07 13:40:00,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:40:00,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2025 transitions. [2020-07-07 13:40:00,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-07 13:40:00,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:40:00,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-07 13:40:00,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:40:00,123 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:40:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:40:00,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1044088891, now seen corresponding path program 1 times [2020-07-07 13:40:00,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:40:00,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306803482] [2020-07-07 13:40:00,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:40:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:40:00,411 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:40:00,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306803482] [2020-07-07 13:40:00,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:40:00,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:40:00,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571274905] [2020-07-07 13:40:00,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:40:00,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:40:00,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:40:00,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:40:00,416 INFO L87 Difference]: Start difference. First operand 1671 states and 2025 transitions. Second operand 10 states. [2020-07-07 13:40:04,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:40:04,534 INFO L93 Difference]: Finished difference Result 5840 states and 7627 transitions. [2020-07-07 13:40:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-07 13:40:04,536 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-07-07 13:40:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:40:04,571 INFO L225 Difference]: With dead ends: 5840 [2020-07-07 13:40:04,571 INFO L226 Difference]: Without dead ends: 4191 [2020-07-07 13:40:04,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2020-07-07 13:40:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2020-07-07 13:40:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 3348. [2020-07-07 13:40:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3348 states. [2020-07-07 13:40:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3348 states to 3348 states and 4165 transitions. [2020-07-07 13:40:05,121 INFO L78 Accepts]: Start accepts. Automaton has 3348 states and 4165 transitions. Word has length 146 [2020-07-07 13:40:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:40:05,122 INFO L479 AbstractCegarLoop]: Abstraction has 3348 states and 4165 transitions. [2020-07-07 13:40:05,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:40:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3348 states and 4165 transitions. [2020-07-07 13:40:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-07 13:40:05,133 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:40:05,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:40:05,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:40:05,134 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:40:05,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:40:05,134 INFO L82 PathProgramCache]: Analyzing trace with hash 319600316, now seen corresponding path program 1 times [2020-07-07 13:40:05,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:40:05,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360130971] [2020-07-07 13:40:05,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:40:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:40:05,354 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:40:05,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360130971] [2020-07-07 13:40:05,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:40:05,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:40:05,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032751766] [2020-07-07 13:40:05,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:40:05,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:40:05,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:40:05,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:40:05,357 INFO L87 Difference]: Start difference. First operand 3348 states and 4165 transitions. Second operand 9 states. [2020-07-07 13:40:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:40:09,304 INFO L93 Difference]: Finished difference Result 9130 states and 12406 transitions. [2020-07-07 13:40:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 13:40:09,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-07-07 13:40:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:40:09,360 INFO L225 Difference]: With dead ends: 9130 [2020-07-07 13:40:09,360 INFO L226 Difference]: Without dead ends: 5804 [2020-07-07 13:40:09,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-07-07 13:40:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5804 states. [2020-07-07 13:40:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5804 to 4663. [2020-07-07 13:40:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4663 states. [2020-07-07 13:40:10,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 5771 transitions. [2020-07-07 13:40:10,235 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 5771 transitions. Word has length 151 [2020-07-07 13:40:10,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:40:10,235 INFO L479 AbstractCegarLoop]: Abstraction has 4663 states and 5771 transitions. [2020-07-07 13:40:10,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:40:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 5771 transitions. [2020-07-07 13:40:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-07 13:40:10,249 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:40:10,249 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:40:10,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:40:10,250 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:40:10,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:40:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2071833919, now seen corresponding path program 1 times [2020-07-07 13:40:10,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:40:10,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281260568] [2020-07-07 13:40:10,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:40:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:40:10,536 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:40:10,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281260568] [2020-07-07 13:40:10,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:40:10,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:40:10,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788968403] [2020-07-07 13:40:10,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:40:10,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:40:10,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:40:10,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:40:10,539 INFO L87 Difference]: Start difference. First operand 4663 states and 5771 transitions. Second operand 6 states. [2020-07-07 13:40:13,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:40:13,091 INFO L93 Difference]: Finished difference Result 10603 states and 13531 transitions. [2020-07-07 13:40:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:40:13,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-07-07 13:40:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:40:13,129 INFO L225 Difference]: With dead ends: 10603 [2020-07-07 13:40:13,129 INFO L226 Difference]: Without dead ends: 5962 [2020-07-07 13:40:13,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:40:13,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2020-07-07 13:40:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 4829. [2020-07-07 13:40:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4829 states. [2020-07-07 13:40:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 5984 transitions. [2020-07-07 13:40:13,808 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 5984 transitions. Word has length 153 [2020-07-07 13:40:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:40:13,808 INFO L479 AbstractCegarLoop]: Abstraction has 4829 states and 5984 transitions. [2020-07-07 13:40:13,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:40:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 5984 transitions. [2020-07-07 13:40:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-07-07 13:40:13,820 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:40:13,820 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 13:40:13,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:40:13,820 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:40:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:40:13,821 INFO L82 PathProgramCache]: Analyzing trace with hash -584227059, now seen corresponding path program 1 times [2020-07-07 13:40:13,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:40:13,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105999168] [2020-07-07 13:40:13,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:40:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:40:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:40:13,987 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:40:13,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105999168] [2020-07-07 13:40:13,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:40:13,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:40:13,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041131160] [2020-07-07 13:40:13,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:40:13,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:40:13,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:40:13,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:40:13,990 INFO L87 Difference]: Start difference. First operand 4829 states and 5984 transitions. Second operand 7 states. [2020-07-07 13:40:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:40:18,091 INFO L93 Difference]: Finished difference Result 14997 states and 19640 transitions. [2020-07-07 13:40:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 13:40:18,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-07-07 13:40:18,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:40:18,152 INFO L225 Difference]: With dead ends: 14997 [2020-07-07 13:40:18,152 INFO L226 Difference]: Without dead ends: 9290 [2020-07-07 13:40:18,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:40:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9290 states. [2020-07-07 13:40:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9290 to 8870. [2020-07-07 13:40:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8870 states. [2020-07-07 13:40:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 11018 transitions. [2020-07-07 13:40:19,337 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 11018 transitions. Word has length 158 [2020-07-07 13:40:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:40:19,337 INFO L479 AbstractCegarLoop]: Abstraction has 8870 states and 11018 transitions. [2020-07-07 13:40:19,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:40:19,338 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 11018 transitions. [2020-07-07 13:40:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-07 13:40:19,354 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:40:19,354 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-07-07 13:40:19,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:40:19,355 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:40:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:40:19,355 INFO L82 PathProgramCache]: Analyzing trace with hash -523474928, now seen corresponding path program 1 times [2020-07-07 13:40:19,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:40:19,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183112764] [2020-07-07 13:40:19,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:40:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:40:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:40:19,488 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:40:19,488 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:40:19,489 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:40:19,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:40:19,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:40:19 BoogieIcfgContainer [2020-07-07 13:40:19,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:40:19,522 INFO L168 Benchmark]: Toolchain (without parser) took 30105.16 ms. Allocated memory was 144.7 MB in the beginning and 1.1 GB in the end (delta: 972.0 MB). Free memory was 101.2 MB in the beginning and 285.9 MB in the end (delta: -184.8 MB). Peak memory consumption was 787.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:40:19,523 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:40:19,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.09 ms. Allocated memory was 144.7 MB in the beginning and 205.0 MB in the end (delta: 60.3 MB). Free memory was 101.0 MB in the beginning and 172.4 MB in the end (delta: -71.4 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:40:19,525 INFO L168 Benchmark]: Boogie Preprocessor took 106.08 ms. Allocated memory is still 205.0 MB. Free memory was 172.4 MB in the beginning and 167.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:40:19,526 INFO L168 Benchmark]: RCFGBuilder took 1485.14 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 167.3 MB in the beginning and 163.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:40:19,527 INFO L168 Benchmark]: TraceAbstraction took 27831.34 ms. Allocated memory was 236.5 MB in the beginning and 1.1 GB in the end (delta: 880.3 MB). Free memory was 163.0 MB in the beginning and 285.9 MB in the end (delta: -122.9 MB). Peak memory consumption was 757.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:40:19,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.09 ms. Allocated memory was 144.7 MB in the beginning and 205.0 MB in the end (delta: 60.3 MB). Free memory was 101.0 MB in the beginning and 172.4 MB in the end (delta: -71.4 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.08 ms. Allocated memory is still 205.0 MB. Free memory was 172.4 MB in the beginning and 167.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1485.14 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 167.3 MB in the beginning and 163.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27831.34 ms. Allocated memory was 236.5 MB in the beginning and 1.1 GB in the end (delta: 880.3 MB). Free memory was 163.0 MB in the beginning and 285.9 MB in the end (delta: -122.9 MB). Peak memory consumption was 757.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 427]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L7] int a= 1; [L8] int e= 5; [L9] int d= 4; [L10] int f= 6; [L11] int c= 3; [L14] int u = 21; [L15] int v = 22; [L16] int w = 23; [L17] int x = 24; [L18] int y = 25; [L19] int z = 26; [L22] int a25 = 0; [L23] int a11 = 0; [L24] int a28 = 7; [L25] int a19 = 1; [L26] int a21 = 1; [L27] int a17 = 8; [L603] int output = -1; [L606] COND TRUE 1 [L609] int input; [L610] input = __VERIFIER_nondet_int() [L611] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L614] CALL, EXPR calculate_output(input) [L30] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L35] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L38] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L42] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L47] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L50] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L54] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L59] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L65] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L69] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L74] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L82] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L91] COND FALSE !(((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3)))))))) [L95] COND FALSE !(((a28==9)&&(((!(a19==1)&&(((input==3)&&!(a11==1))&&(a17==8)))&&!(a25==1))&&(a21==1)))) [L99] COND FALSE !(((!(a11==1)&&(((a28==11)&&((a25==1)&&((input==1)&&(a19==1))))&&(a17==8)))&&(a21==1))) [L106] COND FALSE !((((a11==1)&&((((((a25==1)&&(a28==8))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7))))&&(input==6))&&(a19==1))&&(a17==9)))&&(a21==1))) [L113] COND FALSE !(((a17==8)&&((a21==1)&&(!(a11==1)&&(!(a19==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))))))) [L119] COND FALSE !((((((a21==1)&&((a28==10)&&((input==1)&&(a25==1))))&&!(a11==1))&&(a17==8))&&!(a19==1))) [L123] COND FALSE !((!(a11==1)&&(!(a19==1)&&(((a17==8)&&((input==6)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a28==8)&&(a25==1)))))&&(a21==1))))) [L130] COND FALSE !(((((a17==8)&&(!(a19==1)&&(((input==6)&&(a21==1))&&!(a25==1))))&&!(a11==1))&&(a28==9))) [L134] COND FALSE !((!(a11==1)&&((!(a25==1)&&(((a21==1)&&((input==1)&&(a19==1)))&&(a17==8)))&&(a28==11)))) [L139] COND FALSE !((((a11==1)&&(((a19==1)&&((a21==1)&&(((a25==1)||!(a25==1))&&(input==4))))&&(a17==9)))&&(a28==9))) [L143] COND FALSE !(((!(a11==1)&&((a28==9)&&(((!(a19==1)&&(input==5))&&!(a25==1))&&(a21==1))))&&(a17==8))) [L148] COND FALSE !(((!(a11==1)&&(((a17==8)&&(((((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))||((a28==8)&&(a25==1)))&&(input==3)))&&!(a19==1)))&&(a21==1))) [L154] COND FALSE !(((a21==1)&&(!(a19==1)&&((((input==5)&&(((a28==8)&&(a25==1))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7)))))&&!(a11==1))&&(a17==8))))) [L159] COND FALSE !((((a17==9)&&(((a28==8)&&(((input==1)&&(a19==1))&&!(a25==1)))&&(a11==1)))&&(a21==1))) [L165] COND TRUE (((a21==1)&&((a19==1)&&((a28==7)&&((a17==8)&&(!(a25==1)&&(input==3))))))&&!(a11==1)) [L166] a25 = 1 [L167] a28 = 9 [L168] return 26; [L614] RET, EXPR calculate_output(input) [L614] output = calculate_output(input) [L606] COND TRUE 1 [L609] int input; [L610] input = __VERIFIER_nondet_int() [L611] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L614] CALL, EXPR calculate_output(input) [L30] COND TRUE (((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8)) [L31] a28 = 9 [L32] a11 = 1 [L33] a25 = 1 [L34] return -1; [L614] RET, EXPR calculate_output(input) [L614] output = calculate_output(input) [L606] COND TRUE 1 [L609] int input; [L610] input = __VERIFIER_nondet_int() [L611] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L614] CALL calculate_output(input) [L30] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L35] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L38] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L42] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L47] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L50] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L54] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L59] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L65] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L69] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L74] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L82] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L91] COND FALSE !(((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3)))))))) [L95] COND FALSE !(((a28==9)&&(((!(a19==1)&&(((input==3)&&!(a11==1))&&(a17==8)))&&!(a25==1))&&(a21==1)))) [L99] COND FALSE !(((!(a11==1)&&(((a28==11)&&((a25==1)&&((input==1)&&(a19==1))))&&(a17==8)))&&(a21==1))) [L106] COND FALSE !((((a11==1)&&((((((a25==1)&&(a28==8))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7))))&&(input==6))&&(a19==1))&&(a17==9)))&&(a21==1))) [L113] COND FALSE !(((a17==8)&&((a21==1)&&(!(a11==1)&&(!(a19==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))))))) [L119] COND FALSE !((((((a21==1)&&((a28==10)&&((input==1)&&(a25==1))))&&!(a11==1))&&(a17==8))&&!(a19==1))) [L123] COND FALSE !((!(a11==1)&&(!(a19==1)&&(((a17==8)&&((input==6)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a28==8)&&(a25==1)))))&&(a21==1))))) [L130] COND FALSE !(((((a17==8)&&(!(a19==1)&&(((input==6)&&(a21==1))&&!(a25==1))))&&!(a11==1))&&(a28==9))) [L134] COND FALSE !((!(a11==1)&&((!(a25==1)&&(((a21==1)&&((input==1)&&(a19==1)))&&(a17==8)))&&(a28==11)))) [L139] COND FALSE !((((a11==1)&&(((a19==1)&&((a21==1)&&(((a25==1)||!(a25==1))&&(input==4))))&&(a17==9)))&&(a28==9))) [L143] COND FALSE !(((!(a11==1)&&((a28==9)&&(((!(a19==1)&&(input==5))&&!(a25==1))&&(a21==1))))&&(a17==8))) [L148] COND FALSE !(((!(a11==1)&&(((a17==8)&&(((((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))||((a28==8)&&(a25==1)))&&(input==3)))&&!(a19==1)))&&(a21==1))) [L154] COND FALSE !(((a21==1)&&(!(a19==1)&&((((input==5)&&(((a28==8)&&(a25==1))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7)))))&&!(a11==1))&&(a17==8))))) [L159] COND FALSE !((((a17==9)&&(((a28==8)&&(((input==1)&&(a19==1))&&!(a25==1)))&&(a11==1)))&&(a21==1))) [L165] COND FALSE !((((a21==1)&&((a19==1)&&((a28==7)&&((a17==8)&&(!(a25==1)&&(input==3))))))&&!(a11==1))) [L169] COND FALSE !(((a28==11)&&(((a17==8)&&((((input==6)&&(a21==1))&&(a19==1))&&!(a25==1)))&&!(a11==1)))) [L175] COND FALSE !(((!(a11==1)&&(((a17==8)&&((a21==1)&&((input==3)&&(a28==8))))&&(a19==1)))&&(a25==1))) [L179] COND FALSE !((((a21==1)&&(((a19==1)&&(((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))&&(input==4)))&&(a11==1)))&&(a17==9))) [L185] COND FALSE !((((!(a11==1)&&((a17==8)&&(((input==4)&&(a19==1))&&(a28==8))))&&(a21==1))&&(a25==1))) [L187] COND FALSE !(((a19==1)&&((((((input==4)&&(a21==1))&&(a28==9))&&!(a25==1))&&!(a11==1))&&(a17==8)))) [L189] COND FALSE !(((a17==8)&&((((((input==1)&&(a21==1))&&!(a11==1))&&(a19==1))&&!(a25==1))&&(a28==9)))) [L191] COND FALSE !((((((((input==4)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a21==1))&&(a17==8))&&(a28==10))&&(a19==1))) [L194] COND FALSE !(((!(a25==1)&&((a11==1)&&((a28==8)&&(((a17==9)&&(input==4))&&(a19==1)))))&&(a21==1))) [L198] COND FALSE !((!(a19==1)&&((a17==8)&&((a28==10)&&(((a25==1)&&(!(a11==1)&&(input==5)))&&(a21==1)))))) [L202] COND FALSE !((((((a21==1)&&((input==1)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))))&&(a17==8))&&!(a11==1))&&(a19==1))) [L212] COND FALSE !(((a21==1)&&((((a19==1)&&((a25==1)&&((a28==11)&&(input==6))))&&!(a11==1))&&(a17==8)))) [L215] COND FALSE !((!(a11==1)&&((a19==1)&&((a28==10)&&(((((a25==1)||!(a25==1))&&(input==5))&&(a17==8))&&(a21==1)))))) [L218] COND FALSE !((((((a17==9)&&((((a25==1)||!(a25==1))&&(input==6))&&(a11==1)))&&(a19==1))&&(a21==1))&&(a28==9))) [L223] COND FALSE !((((a17==8)&&(((((input==6)&&(a25==1))&&!(a19==1))&&!(a11==1))&&(a28==10)))&&(a21==1))) [L225] COND FALSE !(((!(a19==1)&&((a17==8)&&(!(a11==1)&&((input==1)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))))&&(a21==1))) [L232] COND FALSE !((((((((input==1)&&(a21==1))&&(a28==9))&&!(a19==1))&&!(a25==1))&&(a17==8))&&!(a11==1))) [L234] COND FALSE !(((a17==8)&&(((!(a11==1)&&((!(a25==1)&&(input==4))&&(a19==1)))&&(a28==7))&&(a21==1)))) [L237] COND FALSE !((!(a11==1)&&(((a17==8)&&((((!(a25==1)&&(a28==11))||((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1))))&&(input==3))&&(a21==1)))&&!(a19==1)))) [L248] COND FALSE !(((((!(a11==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==5)))&&(a21==1))&&!(a19==1))&&(a17==8))) [L253] COND FALSE !((((a17==9)&&(((((input==1)&&((a25==1)||!(a25==1)))&&(a11==1))&&(a21==1))&&(a19==1)))&&(a28==9))) [L259] COND FALSE !((!(a11==1)&&((a19==1)&&(((((a28==9)&&(input==6))&&(a21==1))&&(a17==8))&&!(a25==1))))) [L261] COND FALSE !(((a17==9)&&((a21==1)&&((a11==1)&&(((input==3)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a19==1)))))) [L276] COND FALSE !(((a28==7)&&((a17==8)&&(!(a25==1)&&((a21==1)&&((a19==1)&&((input==5)&&!(a11==1)))))))) [L280] COND FALSE !(((a28==8)&&((a21==1)&&((!(a11==1)&&(((input==1)&&(a17==8))&&(a19==1)))&&(a25==1))))) [L283] COND FALSE !((((((a17==8)&&(((input==6)&&((a25==1)||!(a25==1)))&&(a21==1)))&&(a28==10))&&!(a11==1))&&(a19==1))) [L286] COND FALSE !(((!(a11==1)&&((!(a19==1)&&(((!(a25==1)&&(a28==11))||(((a28==10)&&!(a25==1))||((a25==1)&&(a28==11))))&&(input==5)))&&(a17==8)))&&(a21==1))) [L291] COND FALSE !(((a17==8)&&(((a21==1)&&(!(a11==1)&&((a25==1)&&((a28==8)&&(input==6)))))&&(a19==1)))) [L293] COND FALSE !((((a19==1)&&((a17==8)&&(((!(a25==1)&&(input==5))&&(a21==1))&&!(a11==1))))&&(a28==11))) [L297] COND FALSE !(((a11==1)&&(((a17==9)&&((a28==9)&&((a19==1)&&(((a25==1)||!(a25==1))&&(input==5)))))&&(a21==1)))) [L309] COND FALSE !((((((((input==3)&&(a19==1))&&(a21==1))&&(a17==8))&&!(a25==1))&&(a28==11))&&!(a11==1))) [L314] COND FALSE !(((a19==1)&&((a21==1)&&((((input==5)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a11==1))&&(a17==9))))) [L328] COND FALSE !((((a19==1)&&(((!(a11==1)&&(((a25==1)||!(a25==1))&&(input==3)))&&(a28==10))&&(a21==1)))&&(a17==8))) [L331] COND FALSE !(((!(a11==1)&&(((((input==4)&&(a17==8))&&!(a25==1))&&(a21==1))&&(a28==11)))&&(a19==1))) [L337] COND FALSE !((((!(a19==1)&&(((input==4)&&(((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1)))||(!(a25==1)&&(a28==11))))&&(a21==1)))&&(a17==8))&&!(a11==1))) [L349] COND FALSE !((!(a11==1)&&(((a17==8)&&((((a25==1)&&(input==4))&&(a19==1))&&(a28==11)))&&(a21==1)))) [L354] COND FALSE !((((((a21==1)&&((((a28==8)&&!(a25==1))||((a28==9)&&(a25==1)))&&(input==6)))&&!(a11==1))&&!(a19==1))&&(a17==8))) [L361] COND FALSE !(((a19==1)&&((((a21==1)&&((!(a25==1)&&(input==3))&&(a17==9)))&&(a28==8))&&(a11==1)))) [L368] COND FALSE !(((a17==8)&&(((a21==1)&&(((input==5)&&((!(a25==1)&&(a28==8))||((a28==9)&&(a25==1))))&&(a19==1)))&&!(a11==1)))) [L375] COND FALSE !(((a19==1)&&(((((a17==8)&&((input==5)&&!(a11==1)))&&(a21==1))&&(a25==1))&&(a28==8)))) [L378] COND FALSE !((((!(a11==1)&&((((a21==1)&&(input==4))&&(a28==10))&&(a17==8)))&&!(a19==1))&&(a25==1))) [L380] COND FALSE !(((a28==8)&&(((a19==1)&&((a11==1)&&(!(a25==1)&&((a17==9)&&(input==6)))))&&(a21==1)))) [L389] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==6)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))&&(a17==8))&&!(a19==1)))) [L394] COND FALSE !((((((!(a25==1)&&((a19==1)&&(input==3)))&&(a28==9))&&(a21==1))&&(a17==8))&&!(a11==1))) [L398] COND FALSE !((((a17==8)&&((((input==4)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9))))&&(a21==1))&&!(a19==1)))&&!(a11==1))) [L402] COND FALSE !((((!(a11==1)&&((((a19==1)&&(input==5))&&(a17==8))&&(a21==1)))&&(a28==9))&&!(a25==1))) [L404] COND FALSE !((((a11==1)&&((a19==1)&&((a21==1)&&(((a17==9)&&(input==5))&&!(a25==1)))))&&(a28==8))) [L407] COND FALSE !((!(a11==1)&&((a21==1)&&(((a19==1)&&((a17==8)&&((a25==1)&&(input==5))))&&(a28==11))))) [L409] COND FALSE !(((a19==1)&&((a17==8)&&(((((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))&&!(a11==1))&&(a21==1))))) [L414] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==7))&&!(a19==1))&&(a21==1))&&(a17==8))) [L417] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==10))&&(a19==1))&&(a21==1))&&(a17==8))) [L420] COND FALSE !(((((((a25==1)&&!(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==8))) [L423] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==7))) [L426] COND TRUE ((((((a25==1)&&(a11==1))&&(a28==9))&&(a19==1))&&(a21==1))&&(a17==8)) [L427] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 527 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.7s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1797 SDtfs, 7988 SDslu, 2881 SDs, 0 SdLazy, 11256 SolverSat, 1361 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8870occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 4131 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...