/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:58:25,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:58:25,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:58:25,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:58:25,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:58:25,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:58:25,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:58:25,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:58:25,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:58:25,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:58:25,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:58:25,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:58:25,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:58:25,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:58:25,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:58:25,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:58:25,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:58:25,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:58:25,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:58:25,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:58:25,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:58:25,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:58:25,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:58:25,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:58:25,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:58:25,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:58:25,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:58:25,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:58:25,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:58:25,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:58:25,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:58:25,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:58:25,459 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:58:25,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:58:25,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:58:25,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:58:25,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:58:25,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:58:25,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:58:25,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:58:25,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:58:25,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:58:25,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:58:25,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:58:25,464 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:58:25,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:58:25,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:58:25,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:58:25,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:58:25,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:58:25,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:58:25,466 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:58:25,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:58:25,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:58:25,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:58:25,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:58:25,944 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:58:25,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2021-02-23 17:58:26,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a48ebb2/61a277691569414fbf95ad6b69bf573b/FLAG7ff85acf8 [2021-02-23 17:58:26,614 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:58:26,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2021-02-23 17:58:26,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a48ebb2/61a277691569414fbf95ad6b69bf573b/FLAG7ff85acf8 [2021-02-23 17:58:26,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a48ebb2/61a277691569414fbf95ad6b69bf573b [2021-02-23 17:58:26,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:58:26,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:58:26,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:58:26,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:58:26,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:58:26,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:58:26" (1/1) ... [2021-02-23 17:58:26,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c54e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:26, skipping insertion in model container [2021-02-23 17:58:26,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:58:26" (1/1) ... [2021-02-23 17:58:27,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:58:27,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:58:27,260 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c[502,515] [2021-02-23 17:58:27,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:58:27,331 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:58:27,350 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c[502,515] [2021-02-23 17:58:27,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:58:27,411 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:58:27,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:27 WrapperNode [2021-02-23 17:58:27,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:58:27,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:58:27,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:58:27,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:58:27,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:27" (1/1) ... [2021-02-23 17:58:27,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:27" (1/1) ... [2021-02-23 17:58:27,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:27" (1/1) ... [2021-02-23 17:58:27,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:27" (1/1) ... [2021-02-23 17:58:27,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:27" (1/1) ... [2021-02-23 17:58:27,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:27" (1/1) ... [2021-02-23 17:58:27,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:27" (1/1) ... [2021-02-23 17:58:27,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:58:27,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:58:27,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:58:27,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:58:27,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:27" (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 [2021-02-23 17:58:27,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:58:27,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:58:27,595 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:58:27,595 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 17:58:27,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 17:58:27,596 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-02-23 17:58:27,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:58:27,596 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-02-23 17:58:27,596 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 17:58:27,596 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 17:58:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:58:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:58:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:58:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:58:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 17:58:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 17:58:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:58:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 17:58:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:58:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:58:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 17:58:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-02-23 17:58:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:58:27,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:58:27,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:58:27,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:58:27,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:58:27,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:58:27,999 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:58:28,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:58:28 BoogieIcfgContainer [2021-02-23 17:58:28,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:58:28,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:58:28,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:58:28,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:58:28,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:58:26" (1/3) ... [2021-02-23 17:58:28,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f6f075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:58:28, skipping insertion in model container [2021-02-23 17:58:28,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:58:27" (2/3) ... [2021-02-23 17:58:28,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f6f075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:58:28, skipping insertion in model container [2021-02-23 17:58:28,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:58:28" (3/3) ... [2021-02-23 17:58:28,012 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2021-02-23 17:58:28,020 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:58:28,027 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:58:28,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:58:28,092 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:58:28,092 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:58:28,092 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:58:28,093 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:58:28,093 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:58:28,093 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:58:28,093 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:58:28,093 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:58:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2021-02-23 17:58:28,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 17:58:28,139 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:28,140 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 17:58:28,140 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:28,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:28,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1226469690, now seen corresponding path program 1 times [2021-02-23 17:58:28,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:28,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349383991] [2021-02-23 17:58:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:28,247 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:28,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:28,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:28,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:28,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:28,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:28,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:28,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:28,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:28,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:28,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:28,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:58:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:28,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:28,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:58:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:28,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:28,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:58:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:28,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:28,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 17:58:28,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349383991] [2021-02-23 17:58:28,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:28,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:58:28,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693712009] [2021-02-23 17:58:28,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:58:28,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:28,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:58:28,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:58:28,916 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 10 states. [2021-02-23 17:58:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:30,145 INFO L93 Difference]: Finished difference Result 227 states and 263 transitions. [2021-02-23 17:58:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:58:30,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2021-02-23 17:58:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:30,161 INFO L225 Difference]: With dead ends: 227 [2021-02-23 17:58:30,162 INFO L226 Difference]: Without dead ends: 143 [2021-02-23 17:58:30,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-02-23 17:58:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-02-23 17:58:30,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 127. [2021-02-23 17:58:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2021-02-23 17:58:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-02-23 17:58:30,271 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 45 [2021-02-23 17:58:30,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:30,272 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-02-23 17:58:30,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:58:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-02-23 17:58:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 17:58:30,276 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:30,276 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 17:58:30,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:58:30,277 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:30,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:30,278 INFO L82 PathProgramCache]: Analyzing trace with hash 41918952, now seen corresponding path program 1 times [2021-02-23 17:58:30,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:30,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899448128] [2021-02-23 17:58:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:30,283 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:30,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:30,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:30,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 17:58:30,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 17:58:30,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 17:58:30,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 17:58:30,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:30,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:30,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:30,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:30,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:30,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:30,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:30,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:58:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:30,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:30,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:58:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:30,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:30,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:58:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:30,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:30,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-23 17:58:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:30,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:30,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 17:58:30,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899448128] [2021-02-23 17:58:30,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:30,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:58:30,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905912384] [2021-02-23 17:58:30,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:58:30,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:30,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:58:30,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:58:30,683 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand 14 states. [2021-02-23 17:58:31,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:31,597 INFO L93 Difference]: Finished difference Result 133 states and 142 transitions. [2021-02-23 17:58:31,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 17:58:31,598 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2021-02-23 17:58:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:31,600 INFO L225 Difference]: With dead ends: 133 [2021-02-23 17:58:31,600 INFO L226 Difference]: Without dead ends: 113 [2021-02-23 17:58:31,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-02-23 17:58:31,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-02-23 17:58:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-02-23 17:58:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-02-23 17:58:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2021-02-23 17:58:31,639 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 57 [2021-02-23 17:58:31,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:31,639 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2021-02-23 17:58:31,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:58:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2021-02-23 17:58:31,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-23 17:58:31,642 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:31,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:58:31,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:58:31,643 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:31,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:31,644 INFO L82 PathProgramCache]: Analyzing trace with hash 411171829, now seen corresponding path program 1 times [2021-02-23 17:58:31,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:31,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294015251] [2021-02-23 17:58:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:31,647 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:31,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:31,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:31,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:31,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:31,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:31,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:31,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:31,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:31,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:31,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:31,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:31,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:31,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:31,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:31,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:31,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:58:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:31,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:58:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:31,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:58:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:31,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 17:58:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:31,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:58:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:31,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:31,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-23 17:58:31,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294015251] [2021-02-23 17:58:31,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:31,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 17:58:31,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311789073] [2021-02-23 17:58:31,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 17:58:31,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:31,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 17:58:31,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-23 17:58:31,977 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 15 states. [2021-02-23 17:58:33,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:33,665 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2021-02-23 17:58:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 17:58:33,666 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2021-02-23 17:58:33,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:33,670 INFO L225 Difference]: With dead ends: 184 [2021-02-23 17:58:33,670 INFO L226 Difference]: Without dead ends: 182 [2021-02-23 17:58:33,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2021-02-23 17:58:33,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-02-23 17:58:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 156. [2021-02-23 17:58:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-02-23 17:58:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions. [2021-02-23 17:58:33,753 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 72 [2021-02-23 17:58:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:33,754 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 169 transitions. [2021-02-23 17:58:33,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 17:58:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions. [2021-02-23 17:58:33,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-23 17:58:33,758 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:33,758 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:58:33,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:58:33,759 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:33,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash -710591147, now seen corresponding path program 1 times [2021-02-23 17:58:33,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:33,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976323472] [2021-02-23 17:58:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:33,763 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:33,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:33,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:33,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:33,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:33,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:33,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:33,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:33,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:33,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:33,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:33,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:33,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:33,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:33,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:33,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:34,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:34,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:34,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:34,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:58:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:34,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:34,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:58:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:34,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:34,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:34,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:58:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:34,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:34,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:34,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 17:58:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:34,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:34,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:34,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:58:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:34,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:34,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-23 17:58:34,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976323472] [2021-02-23 17:58:34,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:34,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 17:58:34,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113913760] [2021-02-23 17:58:34,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 17:58:34,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:34,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 17:58:34,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-02-23 17:58:34,120 INFO L87 Difference]: Start difference. First operand 156 states and 169 transitions. Second operand 15 states. [2021-02-23 17:58:35,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:35,825 INFO L93 Difference]: Finished difference Result 226 states and 247 transitions. [2021-02-23 17:58:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 17:58:35,826 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2021-02-23 17:58:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:35,831 INFO L225 Difference]: With dead ends: 226 [2021-02-23 17:58:35,832 INFO L226 Difference]: Without dead ends: 224 [2021-02-23 17:58:35,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=806, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 17:58:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-02-23 17:58:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 199. [2021-02-23 17:58:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-02-23 17:58:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 217 transitions. [2021-02-23 17:58:35,886 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 217 transitions. Word has length 72 [2021-02-23 17:58:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:35,887 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 217 transitions. [2021-02-23 17:58:35,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 17:58:35,887 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 217 transitions. [2021-02-23 17:58:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-23 17:58:35,889 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:35,890 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 17:58:35,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:58:35,890 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:35,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:35,891 INFO L82 PathProgramCache]: Analyzing trace with hash -562495935, now seen corresponding path program 1 times [2021-02-23 17:58:35,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:35,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906583492] [2021-02-23 17:58:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:35,894 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:35,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:35,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:35,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:35,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:35,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:35,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:35,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:35,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:35,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:35,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:35,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:35,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 17:58:35,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:35,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 17:58:36,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 17:58:36,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 17:58:36,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:36,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:36,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:36,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:36,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:36,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:36,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:58:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:36,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:58:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:36,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:36,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:58:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:36,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:36,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 17:58:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:36,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:58:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:36,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:36,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-23 17:58:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:36,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:36,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-23 17:58:36,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906583492] [2021-02-23 17:58:36,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:36,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 17:58:36,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24707369] [2021-02-23 17:58:36,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 17:58:36,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:36,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 17:58:36,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:58:36,198 INFO L87 Difference]: Start difference. First operand 199 states and 217 transitions. Second operand 16 states. [2021-02-23 17:58:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:37,426 INFO L93 Difference]: Finished difference Result 211 states and 231 transitions. [2021-02-23 17:58:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 17:58:37,427 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2021-02-23 17:58:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:37,429 INFO L225 Difference]: With dead ends: 211 [2021-02-23 17:58:37,429 INFO L226 Difference]: Without dead ends: 147 [2021-02-23 17:58:37,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2021-02-23 17:58:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-02-23 17:58:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2021-02-23 17:58:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-02-23 17:58:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2021-02-23 17:58:37,456 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 84 [2021-02-23 17:58:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:37,457 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2021-02-23 17:58:37,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 17:58:37,457 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2021-02-23 17:58:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-02-23 17:58:37,460 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:37,460 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-02-23 17:58:37,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:58:37,461 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:37,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:37,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2003080282, now seen corresponding path program 2 times [2021-02-23 17:58:37,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:37,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370501240] [2021-02-23 17:58:37,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:37,464 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:37,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:37,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:37,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:37,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:37,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:37,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:37,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:37,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:58:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:37,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:58:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:37,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:37,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:58:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:37,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:37,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 17:58:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:37,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:37,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:58:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:38,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:38,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:38,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-23 17:58:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:38,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:38,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-23 17:58:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:38,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:38,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-23 17:58:38,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370501240] [2021-02-23 17:58:38,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:38,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 17:58:38,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757914699] [2021-02-23 17:58:38,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 17:58:38,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:38,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 17:58:38,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-02-23 17:58:38,038 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 20 states. [2021-02-23 17:58:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:39,981 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2021-02-23 17:58:39,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-23 17:58:39,982 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 99 [2021-02-23 17:58:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:39,988 INFO L225 Difference]: With dead ends: 173 [2021-02-23 17:58:39,988 INFO L226 Difference]: Without dead ends: 171 [2021-02-23 17:58:39,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2021-02-23 17:58:39,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-02-23 17:58:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2021-02-23 17:58:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-02-23 17:58:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2021-02-23 17:58:40,024 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 99 [2021-02-23 17:58:40,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:40,026 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2021-02-23 17:58:40,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 17:58:40,027 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2021-02-23 17:58:40,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-02-23 17:58:40,030 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:40,030 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-02-23 17:58:40,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 17:58:40,031 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:40,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:40,031 INFO L82 PathProgramCache]: Analyzing trace with hash 881317306, now seen corresponding path program 1 times [2021-02-23 17:58:40,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:40,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504165145] [2021-02-23 17:58:40,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:40,034 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:40,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:40,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:40,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:40,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:40,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:40,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:40,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:58:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:40,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:40,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:58:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:40,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:58:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:40,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:40,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 17:58:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:40,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:40,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:58:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:40,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-23 17:58:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:40,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-23 17:58:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:40,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:40,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-23 17:58:40,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504165145] [2021-02-23 17:58:40,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:40,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 17:58:40,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815979802] [2021-02-23 17:58:40,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 17:58:40,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:40,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 17:58:40,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-02-23 17:58:40,463 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 20 states. [2021-02-23 17:58:42,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:42,610 INFO L93 Difference]: Finished difference Result 196 states and 209 transitions. [2021-02-23 17:58:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-23 17:58:42,611 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 99 [2021-02-23 17:58:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:42,614 INFO L225 Difference]: With dead ends: 196 [2021-02-23 17:58:42,614 INFO L226 Difference]: Without dead ends: 194 [2021-02-23 17:58:42,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=332, Invalid=1648, Unknown=0, NotChecked=0, Total=1980 [2021-02-23 17:58:42,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-02-23 17:58:42,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 147. [2021-02-23 17:58:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2021-02-23 17:58:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2021-02-23 17:58:42,664 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 99 [2021-02-23 17:58:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:42,665 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2021-02-23 17:58:42,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 17:58:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2021-02-23 17:58:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-02-23 17:58:42,667 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:42,668 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-02-23 17:58:42,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 17:58:42,668 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:42,669 INFO L82 PathProgramCache]: Analyzing trace with hash -39618822, now seen corresponding path program 2 times [2021-02-23 17:58:42,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:42,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8665344] [2021-02-23 17:58:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:42,672 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:42,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:42,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:42,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:42,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:42,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:42,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:43,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:43,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:43,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:43,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:58:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:43,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:43,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:43,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:58:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:43,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:43,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:43,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:58:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:43,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:43,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:43,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 17:58:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:43,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:43,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:43,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:58:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:43,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:43,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-23 17:58:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:43,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:43,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:43,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-23 17:58:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:43,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:43,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-23 17:58:43,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8665344] [2021-02-23 17:58:43,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:43,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 17:58:43,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098678261] [2021-02-23 17:58:43,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 17:58:43,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:43,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 17:58:43,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-02-23 17:58:43,125 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand 20 states. [2021-02-23 17:58:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:45,272 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions. [2021-02-23 17:58:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-23 17:58:45,273 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 99 [2021-02-23 17:58:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:45,275 INFO L225 Difference]: With dead ends: 213 [2021-02-23 17:58:45,276 INFO L226 Difference]: Without dead ends: 211 [2021-02-23 17:58:45,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=346, Invalid=1634, Unknown=0, NotChecked=0, Total=1980 [2021-02-23 17:58:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-02-23 17:58:45,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 187. [2021-02-23 17:58:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2021-02-23 17:58:45,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 200 transitions. [2021-02-23 17:58:45,320 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 200 transitions. Word has length 99 [2021-02-23 17:58:45,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:45,321 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 200 transitions. [2021-02-23 17:58:45,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 17:58:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 200 transitions. [2021-02-23 17:58:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-02-23 17:58:45,323 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:45,323 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-02-23 17:58:45,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 17:58:45,324 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:45,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:45,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1220663755, now seen corresponding path program 3 times [2021-02-23 17:58:45,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:45,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584422824] [2021-02-23 17:58:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:45,328 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:45,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:45,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:58:45,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:58:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:58:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:58:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 17:58:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:58:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-23 17:58:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-23 17:58:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 17:58:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-02-23 17:58:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:45,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:45,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-23 17:58:45,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584422824] [2021-02-23 17:58:45,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:45,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-02-23 17:58:45,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965567471] [2021-02-23 17:58:45,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 17:58:45,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:45,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 17:58:45,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-02-23 17:58:45,970 INFO L87 Difference]: Start difference. First operand 187 states and 200 transitions. Second operand 25 states. [2021-02-23 17:58:49,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:49,226 INFO L93 Difference]: Finished difference Result 242 states and 257 transitions. [2021-02-23 17:58:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-23 17:58:49,227 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 126 [2021-02-23 17:58:49,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:49,230 INFO L225 Difference]: With dead ends: 242 [2021-02-23 17:58:49,230 INFO L226 Difference]: Without dead ends: 176 [2021-02-23 17:58:49,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=576, Invalid=2846, Unknown=0, NotChecked=0, Total=3422 [2021-02-23 17:58:49,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-02-23 17:58:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 164. [2021-02-23 17:58:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-02-23 17:58:49,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2021-02-23 17:58:49,269 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 126 [2021-02-23 17:58:49,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:49,269 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2021-02-23 17:58:49,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 17:58:49,269 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2021-02-23 17:58:49,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-02-23 17:58:49,271 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:49,271 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-02-23 17:58:49,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 17:58:49,272 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:49,272 INFO L82 PathProgramCache]: Analyzing trace with hash -2141599883, now seen corresponding path program 4 times [2021-02-23 17:58:49,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:49,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022635869] [2021-02-23 17:58:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:49,275 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:49,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:49,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:49,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:49,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:49,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 17:58:49,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 17:58:49,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:49,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:58:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 17:58:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:58:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:58:49,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 17:58:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:58:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-23 17:58:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-23 17:58:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-23 17:58:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-02-23 17:58:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:49,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:49,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-23 17:58:49,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022635869] [2021-02-23 17:58:49,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:49,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 17:58:49,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226180981] [2021-02-23 17:58:49,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 17:58:49,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:49,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 17:58:49,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:58:49,547 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 12 states. [2021-02-23 17:58:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:50,166 INFO L93 Difference]: Finished difference Result 168 states and 177 transitions. [2021-02-23 17:58:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:58:50,166 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2021-02-23 17:58:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:50,167 INFO L225 Difference]: With dead ends: 168 [2021-02-23 17:58:50,167 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 17:58:50,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-02-23 17:58:50,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 17:58:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 17:58:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 17:58:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 17:58:50,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2021-02-23 17:58:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:50,170 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 17:58:50,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 17:58:50,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 17:58:50,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 17:58:50,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 17:58:50,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 17:58:53,671 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2021-02-23 17:58:53,827 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2021-02-23 17:58:54,097 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2021-02-23 17:58:54,437 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2021-02-23 17:58:54,649 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2021-02-23 17:58:54,755 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2021-02-23 17:58:55,045 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2021-02-23 17:58:55,239 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 34 [2021-02-23 17:58:55,504 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2021-02-23 17:58:55,886 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2021-02-23 17:58:56,101 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2021-02-23 17:58:56,294 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2021-02-23 17:58:56,537 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2021-02-23 17:58:56,777 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2021-02-23 17:58:57,071 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 43 [2021-02-23 17:58:57,413 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2021-02-23 17:58:57,785 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2021-02-23 17:58:58,128 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2021-02-23 17:58:58,345 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2021-02-23 17:58:58,709 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2021-02-23 17:58:58,923 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2021-02-23 17:58:59,320 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2021-02-23 17:58:59,544 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2021-02-23 17:58:59,904 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48 [2021-02-23 17:59:00,298 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2021-02-23 17:59:00,552 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2021-02-23 17:59:00,805 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2021-02-23 17:59:01,069 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2021-02-23 17:59:01,312 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2021-02-23 17:59:01,476 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2021-02-23 17:59:01,501 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-02-23 17:59:01,501 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-02-23 17:59:01,501 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-02-23 17:59:01,502 INFO L192 CegarLoopUtils]: At program point L5-4(line 5) the Hoare annotation is: true [2021-02-23 17:59:01,502 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:59:01,502 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 17:59:01,502 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 5) the Hoare annotation is: true [2021-02-23 17:59:01,502 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= |old(#t~string7.base)| |#t~string7.base|) (= |old(#valid)| |#valid|)) [2021-02-23 17:59:01,502 INFO L192 CegarLoopUtils]: At program point L5(line 5) the Hoare annotation is: true [2021-02-23 17:59:01,503 INFO L192 CegarLoopUtils]: At program point L5-1(line 5) the Hoare annotation is: true [2021-02-23 17:59:01,503 INFO L192 CegarLoopUtils]: At program point L5-2(line 5) the Hoare annotation is: true [2021-02-23 17:59:01,503 INFO L192 CegarLoopUtils]: At program point L5-3(line 5) the Hoare annotation is: true [2021-02-23 17:59:01,503 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:59:01,503 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:59:01,503 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:59:01,503 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 17:59:01,503 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 17:59:01,504 INFO L192 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2021-02-23 17:59:01,504 INFO L192 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: true [2021-02-23 17:59:01,504 INFO L192 CegarLoopUtils]: At program point L8-1(line 8) the Hoare annotation is: true [2021-02-23 17:59:01,504 INFO L192 CegarLoopUtils]: At program point L8-3(lines 7 9) the Hoare annotation is: true [2021-02-23 17:59:01,504 INFO L192 CegarLoopUtils]: At program point assume_abort_if_notEXIT(lines 7 9) the Hoare annotation is: true [2021-02-23 17:59:01,504 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 40 54) the Hoare annotation is: true [2021-02-23 17:59:01,504 INFO L192 CegarLoopUtils]: At program point L52(line 52) the Hoare annotation is: true [2021-02-23 17:59:01,505 INFO L185 CegarLoopUtils]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)) (= main_~ax~1 0) (= main_~ai~1 0))) [2021-02-23 17:59:01,505 INFO L192 CegarLoopUtils]: At program point L50-1(line 50) the Hoare annotation is: true [2021-02-23 17:59:01,505 INFO L185 CegarLoopUtils]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)))) [2021-02-23 17:59:01,505 INFO L185 CegarLoopUtils]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)) (= |main_#t~mem19| 0))) [2021-02-23 17:59:01,505 INFO L185 CegarLoopUtils]: At program point L46(line 46) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2021-02-23 17:59:01,505 INFO L185 CegarLoopUtils]: At program point L48-2(line 48) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)) (= main_~ai~1 0) (= |main_#t~mem19| 0))) [2021-02-23 17:59:01,505 INFO L185 CegarLoopUtils]: At program point L46-1(line 46) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |main_#t~malloc17.base|)) [2021-02-23 17:59:01,506 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 40 54) the Hoare annotation is: true [2021-02-23 17:59:01,506 INFO L185 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:59:01,506 INFO L185 CegarLoopUtils]: At program point L42-1(line 42) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:59:01,506 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 40 54) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:59:01,506 INFO L185 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)) (= main_~ai~1 0))) [2021-02-23 17:59:01,506 INFO L185 CegarLoopUtils]: At program point L49-1(line 49) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)) (= |main_#t~mem20| 0) (= main_~ai~1 0))) [2021-02-23 17:59:01,506 INFO L185 CegarLoopUtils]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)))) [2021-02-23 17:59:01,507 INFO L185 CegarLoopUtils]: At program point L49-2(line 49) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)) (= main_~ax~1 0) (= |main_#t~mem20| 0) (= main_~ai~1 0))) [2021-02-23 17:59:01,507 INFO L185 CegarLoopUtils]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)))) [2021-02-23 17:59:01,507 INFO L185 CegarLoopUtils]: At program point L45(line 45) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:59:01,507 INFO L185 CegarLoopUtils]: At program point L47-2(line 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)))) [2021-02-23 17:59:01,507 INFO L185 CegarLoopUtils]: At program point L45-1(line 45) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:59:01,507 INFO L185 CegarLoopUtils]: At program point L47-3(line 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)))) [2021-02-23 17:59:01,508 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:59:01,508 INFO L185 CegarLoopUtils]: At program point L43-1(line 43) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:59:01,508 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:59:01,508 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:59:01,508 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (let ((.cse4 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (= (select |#memory_int| check_~a.base) .cse4)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse4)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 .cse2) (or .cse0 (and (or (let ((.cse3 (+ check_~y 1))) (and (<= .cse3 |check_#in~n|) (<= .cse3 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse2) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,508 INFO L185 CegarLoopUtils]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse5 ((as const (Array Int Int)) 0))) (let ((.cse2 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse0 (= (select |#memory_int| check_~a.base) .cse5)) (.cse1 (= |check_#t~mem13| 0)) (.cse3 (not (= (select |#memory_int| |check_#in~a.base|) .cse5)))) (and (or (and .cse0 .cse1) .cse2 (not (<= 1 |check_#in~x|)) .cse3) (or .cse2 (and (or (let ((.cse4 (+ check_~y 1))) (and (<= .cse4 |check_#in~n|) (<= .cse4 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse0 .cse1) (not (= |check_#in~x| 0)) .cse3)))) [2021-02-23 17:59:01,509 INFO L192 CegarLoopUtils]: At program point checkENTRY(lines 16 38) the Hoare annotation is: true [2021-02-23 17:59:01,509 INFO L185 CegarLoopUtils]: At program point L33-2(line 33) the Hoare annotation is: (let ((.cse6 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (= check_~ai~0 0)) (.cse2 (= (select |#memory_int| check_~a.base) .cse6)) (.cse3 (= |check_#t~mem13| 0)) (.cse4 (not (= (select |#memory_int| |check_#in~a.base|) .cse6)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) (and .cse1 .cse2 .cse3) .cse4) (or .cse0 (and (or (let ((.cse5 (+ check_~y 1))) (and (<= .cse5 |check_#in~n|) (<= .cse5 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse1 .cse2 .cse3) (not (= |check_#in~x| 0)) .cse4)))) [2021-02-23 17:59:01,509 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (let ((.cse4 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (= (select |#memory_int| check_~a.base) .cse4)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse4)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 .cse2) (or .cse0 (and (or (let ((.cse3 (+ check_~y 1))) (and (<= .cse3 |check_#in~n|) (<= .cse3 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse2) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,509 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (let ((.cse4 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (= (select |#memory_int| check_~a.base) .cse4)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse4)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 .cse2) (or .cse0 (and (or (let ((.cse3 (+ check_~y 1))) (and (<= .cse3 |check_#in~n|) (<= .cse3 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse2) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,510 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0))))) (and (or .cse0 (not (= |check_#in~x| 0)) .cse1) (or .cse0 (not (<= 1 |check_#in~x|)) .cse1))) [2021-02-23 17:59:01,510 INFO L185 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: (let ((.cse4 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (= (select |#memory_int| check_~a.base) .cse4)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse4)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 .cse2) (or .cse0 (and (or (let ((.cse3 (+ check_~y 1))) (and (<= .cse3 |check_#in~n|) (<= .cse3 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse2) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,510 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0))))) (and (or .cse0 (not (= |check_#in~x| 0)) .cse1) (or .cse0 (not (<= 1 |check_#in~x|)) .cse1))) [2021-02-23 17:59:01,510 INFO L185 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0))))) (and (or .cse0 (not (= |check_#in~x| 0)) .cse1) (or .cse0 (not (<= 1 |check_#in~x|)) .cse1))) [2021-02-23 17:59:01,510 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0)) (.cse8 (+ check_~y 1))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= .cse8 |check_#in~n|)) (.cse4 (<= .cse8 check_~n)) (.cse5 (= (select |#memory_int| check_~a.base) .cse7)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or .cse0 (and .cse3 .cse4 .cse5 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 (let ((.cse6 (+ check_~y 2))) (and (<= .cse6 check_~n) (<= .cse6 |check_#in~n|))) .cse2) (or .cse0 (and .cse3 .cse4 .cse5 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,511 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0)) (.cse8 (+ check_~y 1))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= .cse8 |check_#in~n|)) (.cse4 (<= .cse8 check_~n)) (.cse5 (= (select |#memory_int| check_~a.base) .cse7)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or .cse0 (and .cse3 .cse4 .cse5 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 (let ((.cse6 (+ check_~y 2))) (and (<= .cse6 check_~n) (<= .cse6 |check_#in~n|))) .cse2) (or .cse0 (and .cse3 .cse4 .cse5 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,511 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0)) (.cse5 (+ check_~y 1))) (let ((.cse1 (<= .cse5 |check_#in~n|)) (.cse2 (<= .cse5 check_~n)) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse4 (not (= (select |#memory_int| |check_#in~a.base|) .cse3)))) (and (or .cse0 (and .cse1 .cse2 (= (select |#memory_int| check_~a.base) .cse3) (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse4) (or (and .cse1 .cse2 (= check_~x 0)) .cse0 (not (= |check_#in~x| 0)) .cse4)))) [2021-02-23 17:59:01,511 INFO L185 CegarLoopUtils]: At program point checkFINAL(lines 16 38) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 1 |check_#in~x|)) (not (= (select |#memory_int| |check_#in~a.base|) .cse0)) (= (select |#memory_int| check_~a.base) .cse0))) [2021-02-23 17:59:01,511 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (let ((.cse5 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse5))) (.cse2 (= check_~ai~0 0)) (.cse3 (= (select |#memory_int| check_~a.base) .cse5))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (and .cse2 .cse3)) (or .cse0 (not (= |check_#in~x| 0)) .cse1 (and (or (let ((.cse4 (+ check_~y 1))) (and (<= .cse4 |check_#in~n|) (<= .cse4 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse2 .cse3))))) [2021-02-23 17:59:01,512 INFO L185 CegarLoopUtils]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse6 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse6))) (.cse2 (= |check_#t~mem14| 0)) (.cse3 (= check_~ai~0 0)) (.cse4 (= (select |#memory_int| check_~a.base) .cse6))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (and .cse2 .cse3 .cse4)) (or .cse0 (not (= |check_#in~x| 0)) .cse1 (and .cse2 (or (let ((.cse5 (+ check_~y 1))) (and (<= .cse5 |check_#in~n|) (<= .cse5 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse3 .cse4))))) [2021-02-23 17:59:01,512 INFO L185 CegarLoopUtils]: At program point L34-2(line 34) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (= check_~ax~0 0)) (.cse3 (= |check_#t~mem14| 0)) (.cse5 (= check_~ai~0 0)) (.cse6 (= (select |#memory_int| check_~a.base) .cse7)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7)))) (and (or .cse0 (not (= |check_#in~x| 0)) .cse1 (and .cse2 .cse3 (or (let ((.cse4 (+ check_~y 1))) (and (<= .cse4 |check_#in~n|) (<= .cse4 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse5 .cse6)) (or .cse0 (not (<= 1 |check_#in~x|)) (and .cse2 .cse3 .cse5 .cse6) .cse1)))) [2021-02-23 17:59:01,512 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0)) (.cse8 (+ check_~y 1))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= .cse8 |check_#in~n|)) (.cse4 (<= .cse8 check_~n)) (.cse5 (= (select |#memory_int| check_~a.base) .cse7)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or .cse0 (and .cse3 .cse4 .cse5 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 (let ((.cse6 (+ check_~y 2))) (and (<= .cse6 check_~n) (<= .cse6 |check_#in~n|))) .cse2) (or .cse0 (and .cse3 .cse4 .cse5 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,512 INFO L185 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: (let ((.cse8 ((as const (Array Int Int)) 0)) (.cse9 (+ check_~y 1))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (= |check_#t~mem8| 0)) (.cse4 (<= .cse9 |check_#in~n|)) (.cse5 (<= .cse9 check_~n)) (.cse6 (= (select |#memory_int| check_~a.base) .cse8)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse8))) (.cse2 (not (<= 2 |check_#in~x|)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or .cse0 (not (= |check_#in~x| 0)) .cse1 (and .cse3 .cse4 .cse5 .cse6 (= check_~x 0))) (or .cse0 (not (<= 1 |check_#in~x|)) (and .cse3 .cse4 .cse5 .cse6 (<= 1 check_~x)) .cse1) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 (let ((.cse7 (+ check_~y 2))) (and (<= .cse7 check_~n) (<= .cse7 |check_#in~n|))) .cse2)))) [2021-02-23 17:59:01,513 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0)) (.cse8 (+ check_~y 1))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= .cse8 |check_#in~n|)) (.cse4 (<= .cse8 check_~n)) (.cse5 (= (select |#memory_int| check_~a.base) .cse7)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or .cse0 (and .cse3 .cse4 .cse5 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 (let ((.cse6 (+ check_~y 2))) (and (<= .cse6 check_~n) (<= .cse6 |check_#in~n|))) .cse2) (or .cse0 (and .cse3 .cse4 .cse5 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,513 INFO L185 CegarLoopUtils]: At program point L26-2(lines 26 27) the Hoare annotation is: (let ((.cse9 ((as const (Array Int Int)) 0)) (.cse10 (+ check_~y 1))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (= |check_#t~mem8| 0)) (.cse4 (<= .cse10 |check_#in~n|)) (.cse5 (<= .cse10 check_~n)) (.cse6 (= |check_#t~mem9| 0)) (.cse7 (= (select |#memory_int| check_~a.base) .cse9)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse9))) (.cse2 (not (<= 2 |check_#in~x|)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or .cse0 (and .cse3 .cse4 .cse5 .cse6 .cse7 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or .cse0 (not (= |check_#in~x| 0)) .cse1 (and .cse3 .cse4 .cse5 .cse6 .cse7 (= check_~x 0))) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 (let ((.cse8 (+ check_~y 2))) (and (<= .cse8 check_~n) (<= .cse8 |check_#in~n|))) .cse2)))) [2021-02-23 17:59:01,513 INFO L185 CegarLoopUtils]: At program point L26-3(line 26) the Hoare annotation is: (let ((.cse8 (+ check_~y 1)) (.cse7 ((as const (Array Int Int)) 0))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7))) (.cse4 (<= .cse8 |check_#in~n|)) (.cse5 (<= .cse8 check_~n)) (.cse6 (= (select |#memory_int| check_~a.base) .cse7))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 .cse2 (let ((.cse3 (+ check_~y 2))) (and (<= .cse3 check_~n) (<= .cse3 |check_#in~n|)))) (or .cse0 (and .cse4 .cse5 .cse6 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or .cse0 (not (= |check_#in~x| 0)) .cse1 (and (= |check_#t~mem8| 0) .cse4 .cse5 (= |check_#t~mem9| 0) .cse6 (= check_~x 0)))))) [2021-02-23 17:59:01,513 INFO L185 CegarLoopUtils]: At program point L26-4(line 26) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0)) (.cse8 (+ check_~y 1))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= .cse8 |check_#in~n|)) (.cse4 (<= .cse8 check_~n)) (.cse5 (= (select |#memory_int| check_~a.base) .cse7)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or .cse0 (not (= |check_#in~x| 0)) .cse1 (and (= |check_#t~mem8| 0) .cse3 .cse4 .cse5 (= check_~x 0))) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 .cse2 (let ((.cse6 (+ check_~y 2))) (and (<= .cse6 check_~n) (<= .cse6 |check_#in~n|)))) (or .cse0 (and .cse3 .cse4 .cse5 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1)))) [2021-02-23 17:59:01,514 INFO L185 CegarLoopUtils]: At program point L26-5(line 26) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0)) (.cse8 (+ check_~y 1))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse4 (<= .cse8 |check_#in~n|)) (.cse5 (<= .cse8 check_~n)) (.cse6 (= (select |#memory_int| check_~a.base) .cse7)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 .cse2 (let ((.cse3 (+ check_~y 2))) (and (<= .cse3 check_~n) (<= .cse3 |check_#in~n|)))) (or .cse0 (and .cse4 .cse5 .cse6 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or .cse0 (and .cse4 .cse5 .cse6 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,514 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0)) (.cse8 (+ check_~y 1))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= .cse8 |check_#in~n|)) (.cse4 (<= .cse8 check_~n)) (.cse5 (= (select |#memory_int| check_~a.base) .cse7)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or .cse0 (and .cse3 .cse4 .cse5 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 (let ((.cse6 (+ check_~y 2))) (and (<= .cse6 check_~n) (<= .cse6 |check_#in~n|))) .cse2) (or .cse0 (and .cse3 .cse4 .cse5 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,514 INFO L185 CegarLoopUtils]: At program point L26-6(line 26) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0)) (.cse8 (+ check_~y 1))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= .cse8 |check_#in~n|)) (.cse4 (<= .cse8 check_~n)) (.cse5 (= (select |#memory_int| check_~a.base) .cse7)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7))) (.cse2 (not (<= 2 |check_#in~x|)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (and .cse3 (<= 1 |check_#t~post10|) .cse4 .cse5 (<= 1 check_~x))) (or .cse0 (and .cse3 (= |check_#t~post10| 0) .cse4 .cse5 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 (let ((.cse6 (+ check_~y 2))) (and (<= .cse6 check_~n) (<= .cse6 |check_#in~n|))) .cse2)))) [2021-02-23 17:59:01,515 INFO L185 CegarLoopUtils]: At program point L20-1(line 20) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0)) (.cse8 (+ check_~y 1))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= .cse8 |check_#in~n|)) (.cse4 (<= .cse8 check_~n)) (.cse5 (= (select |#memory_int| check_~a.base) .cse7)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse7)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or .cse0 (and .cse3 .cse4 .cse5 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 (let ((.cse6 (+ check_~y 2))) (and (<= .cse6 check_~n) (<= .cse6 |check_#in~n|))) .cse2) (or .cse0 (and .cse3 .cse4 .cse5 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1)))) [2021-02-23 17:59:01,515 INFO L185 CegarLoopUtils]: At program point L26-7(line 26) the Hoare annotation is: (let ((.cse6 ((as const (Array Int Int)) 0)) (.cse7 (+ check_~y 1))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (<= .cse7 |check_#in~n|)) (.cse3 (<= .cse7 check_~n)) (.cse4 (= (select |#memory_int| check_~a.base) .cse6)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse6)))) (and (or .cse0 (not (= |check_#in~x| 0)) .cse1 (and .cse2 .cse3 (= |check_#t~post10| 0) .cse4 (<= 1 check_~x))) (or .cse0 (and .cse2 (<= 1 |check_#t~post10|) .cse3 .cse4 (<= 2 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 (let ((.cse5 (+ check_~y 2))) (and (<= .cse5 check_~n) (<= .cse5 |check_#in~n|))) (not (<= 2 |check_#in~x|)))))) [2021-02-23 17:59:01,515 INFO L185 CegarLoopUtils]: At program point checkEXIT(lines 16 38) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 1 |check_#in~x|)) (not (= (select |#memory_int| |check_#in~a.base|) .cse0)) (= (select |#memory_int| check_~a.base) .cse0))) [2021-02-23 17:59:01,515 INFO L185 CegarLoopUtils]: At program point L26-9(line 26) the Hoare annotation is: (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0))))) (and (or .cse0 (not (= |check_#in~x| 0)) .cse1) (or .cse0 (not (<= 1 |check_#in~x|)) .cse1))) [2021-02-23 17:59:01,515 INFO L185 CegarLoopUtils]: At program point L16(lines 16 38) the Hoare annotation is: (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0))))) (and (or .cse0 .cse1 (not (<= 2 |check_#in~x|)) (<= 2 check_~x)) (or .cse0 (not (= |check_#in~x| 0)) .cse1 (= check_~x 0)) (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (<= 1 check_~x)))) [2021-02-23 17:59:01,516 INFO L185 CegarLoopUtils]: At program point L26-10(line 26) the Hoare annotation is: (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0))))) (and (or .cse0 (not (= |check_#in~x| 0)) .cse1) (or .cse0 (not (<= 1 |check_#in~x|)) .cse1))) [2021-02-23 17:59:01,516 INFO L185 CegarLoopUtils]: At program point L16-1(lines 16 38) the Hoare annotation is: (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= (+ check_~y 1) |check_#in~n|)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0))))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 .cse2 (<= (+ check_~y 2) |check_#in~n|)) (or .cse0 (and .cse3 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or .cse0 (and .cse3 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1))) [2021-02-23 17:59:01,516 INFO L185 CegarLoopUtils]: At program point L26-11(lines 26 27) the Hoare annotation is: (let ((.cse5 ((as const (Array Int Int)) 0)) (.cse6 (+ check_~y 1))) (let ((.cse1 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (<= .cse6 |check_#in~n|)) (.cse3 (<= .cse6 check_~n)) (.cse4 (= (select |#memory_int| check_~a.base) .cse5)) (.cse0 (not (= (select |#memory_int| |check_#in~a.base|) .cse5)))) (and (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse0 (<= (+ check_~y 2) check_~n) (not (<= 2 |check_#in~x|))) (or .cse1 (and .cse2 .cse3 .cse4 (<= 2 check_~x)) (not (<= 1 |check_#in~x|)) .cse0) (or .cse1 (and .cse2 .cse3 .cse4 (<= 1 check_~x)) (not (= |check_#in~x| 0)) .cse0)))) [2021-02-23 17:59:01,516 INFO L185 CegarLoopUtils]: At program point L16-2(lines 16 38) the Hoare annotation is: (let ((.cse5 ((as const (Array Int Int)) 0))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= (+ check_~y 1) |check_#in~n|)) (.cse4 (= (select |#memory_int| check_~a.base) .cse5)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse5)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 .cse2 (<= (+ check_~y 2) |check_#in~n|)) (or .cse0 (and .cse3 .cse4 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1) (or .cse0 (and .cse3 .cse4 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1)))) [2021-02-23 17:59:01,517 INFO L185 CegarLoopUtils]: At program point L16-3(lines 16 38) the Hoare annotation is: (let ((.cse5 ((as const (Array Int Int)) 0))) (let ((.cse2 (not (<= 2 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (<= (+ check_~y 1) |check_#in~n|)) (.cse4 (= (select |#memory_int| check_~a.base) .cse5)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse5)))) (and (or .cse0 .cse1 .cse2 (<= 2 check_~x)) (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) .cse1 .cse2 (<= (+ check_~y 2) |check_#in~n|)) (or .cse0 (and .cse3 .cse4 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1) (or .cse0 (and .cse3 .cse4 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1)))) [2021-02-23 17:59:01,517 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (let ((.cse6 ((as const (Array Int Int)) 0))) (let ((.cse3 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse0 (= check_~ax~0 0)) (.cse1 (= check_~ai~0 0)) (.cse2 (= (select |#memory_int| check_~a.base) .cse6)) (.cse4 (not (= (select |#memory_int| |check_#in~a.base|) .cse6)))) (and (or (and .cse0 .cse1 .cse2) .cse3 (not (<= 1 |check_#in~x|)) .cse4) (or .cse3 (and .cse0 (or (let ((.cse5 (+ check_~y 1))) (and (<= .cse5 |check_#in~n|) (<= .cse5 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse1 .cse2) (not (= |check_#in~x| 0)) .cse4)))) [2021-02-23 17:59:01,517 INFO L185 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (and (= check_~ax~0 0) (= check_~ai~0 0) (= (select |#memory_int| check_~a.base) .cse0)) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 1 |check_#in~x|)) (not (= (select |#memory_int| |check_#in~a.base|) .cse0)))) [2021-02-23 17:59:01,517 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2021-02-23 17:59:01,517 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 17:59:01,517 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 17:59:01,517 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 17:59:01,518 INFO L185 CegarLoopUtils]: At program point L11-2(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 17:59:01,518 INFO L185 CegarLoopUtils]: At program point L11-4(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 17:59:01,518 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 17:59:01,518 INFO L185 CegarLoopUtils]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2021-02-23 17:59:01,518 INFO L185 CegarLoopUtils]: At program point #Ultimate.meminitEXIT(line -1) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |#Ultimate.meminit_#ptr.base|)) [2021-02-23 17:59:01,518 INFO L185 CegarLoopUtils]: At program point #Ultimate.meminitFINAL(line -1) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |#Ultimate.meminit_#ptr.base|)) [2021-02-23 17:59:01,539 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.ProcedureContractResult.getLongDescription(ProcedureContractResult.java:74) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:558) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createProcedureContractResults(TraceAbstractionStarter.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-23 17:59:01,546 INFO L168 Benchmark]: Toolchain (without parser) took 34582.04 ms. Allocated memory was 182.5 MB in the beginning and 412.1 MB in the end (delta: 229.6 MB). Free memory was 157.7 MB in the beginning and 175.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 242.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:59:01,546 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 182.5 MB. Free memory is still 156.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:59:01,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.54 ms. Allocated memory is still 182.5 MB. Free memory was 156.6 MB in the beginning and 146.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:59:01,549 INFO L168 Benchmark]: Boogie Preprocessor took 79.30 ms. Allocated memory is still 182.5 MB. Free memory was 146.3 MB in the beginning and 144.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:59:01,549 INFO L168 Benchmark]: RCFGBuilder took 508.73 ms. Allocated memory is still 182.5 MB. Free memory was 144.8 MB in the beginning and 122.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:59:01,549 INFO L168 Benchmark]: TraceAbstraction took 33540.08 ms. Allocated memory was 182.5 MB in the beginning and 412.1 MB in the end (delta: 229.6 MB). Free memory was 121.7 MB in the beginning and 175.9 MB in the end (delta: -54.2 MB). Peak memory consumption was 206.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:59:01,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 182.5 MB. Free memory is still 156.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 429.54 ms. Allocated memory is still 182.5 MB. Free memory was 156.6 MB in the beginning and 146.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.30 ms. Allocated memory is still 182.5 MB. Free memory was 146.3 MB in the beginning and 144.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 508.73 ms. Allocated memory is still 182.5 MB. Free memory was 144.8 MB in the beginning and 122.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 33540.08 ms. Allocated memory was 182.5 MB in the beginning and 412.1 MB in the end (delta: 229.6 MB). Free memory was 121.7 MB in the beginning and 175.9 MB in the end (delta: -54.2 MB). Peak memory consumption was 206.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: 1 - ProcedureContractResult [Line: 40]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...