/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loops/string-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:59,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:59,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:59,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:20:59,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:59,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:59,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:59,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:59,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:59,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:59,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:59,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:59,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:59,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:59,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:59,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:59,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:59,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:20:59,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:59,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:59,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:59,787 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:59,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:59,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:59,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:59,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:59,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:59,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:59,791 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:59,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:59,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:59,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:59,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:59,792 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:59,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:59,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:59,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:59,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:59,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:59,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:59,794 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:59,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:21:00,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:21:00,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:21:00,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:21:00,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:21:00,220 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:21:00,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-2.i [2021-02-22 02:21:00,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01bae4937/14c62950d97e47c39b1f6ca17ee63e35/FLAG98ecaee44 [2021-02-22 02:21:00,884 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:21:00,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string-2.i [2021-02-22 02:21:00,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01bae4937/14c62950d97e47c39b1f6ca17ee63e35/FLAG98ecaee44 [2021-02-22 02:21:01,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01bae4937/14c62950d97e47c39b1f6ca17ee63e35 [2021-02-22 02:21:01,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:21:01,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:21:01,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:01,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:21:01,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:21:01,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:01" (1/1) ... [2021-02-22 02:21:01,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5b3da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01, skipping insertion in model container [2021-02-22 02:21:01,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:01" (1/1) ... [2021-02-22 02:21:01,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:21:01,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:21:01,441 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/string-2.i[896,909] [2021-02-22 02:21:01,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:01,474 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:21:01,496 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/string-2.i[896,909] [2021-02-22 02:21:01,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:01,523 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:21:01,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01 WrapperNode [2021-02-22 02:21:01,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:01,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:21:01,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:21:01,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:21:01,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01" (1/1) ... [2021-02-22 02:21:01,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01" (1/1) ... [2021-02-22 02:21:01,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01" (1/1) ... [2021-02-22 02:21:01,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01" (1/1) ... [2021-02-22 02:21:01,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01" (1/1) ... [2021-02-22 02:21:01,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01" (1/1) ... [2021-02-22 02:21:01,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01" (1/1) ... [2021-02-22 02:21:01,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:21:01,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:21:01,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:21:01,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:21:01,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01" (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 [2021-02-22 02:21:01,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:21:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:21:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:21:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:21:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:21:01,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:21:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:21:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:21:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:21:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:21:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:21:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:21:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:21:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:21:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-22 02:21:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:21:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:21:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:21:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:21:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:21:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:21:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:21:02,263 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:21:02,263 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 02:21:02,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:02 BoogieIcfgContainer [2021-02-22 02:21:02,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:21:02,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:21:02,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:21:02,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:21:02,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:21:01" (1/3) ... [2021-02-22 02:21:02,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13dc8325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:02, skipping insertion in model container [2021-02-22 02:21:02,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:01" (2/3) ... [2021-02-22 02:21:02,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13dc8325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:02, skipping insertion in model container [2021-02-22 02:21:02,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:02" (3/3) ... [2021-02-22 02:21:02,275 INFO L111 eAbstractionObserver]: Analyzing ICFG string-2.i [2021-02-22 02:21:02,282 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:21:02,288 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:21:02,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:21:02,333 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:21:02,334 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:21:02,334 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:21:02,334 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:21:02,334 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:21:02,334 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:21:02,334 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:21:02,335 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:21:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2021-02-22 02:21:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-22 02:21:02,363 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:02,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:02,364 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:02,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:02,371 INFO L82 PathProgramCache]: Analyzing trace with hash -449373515, now seen corresponding path program 1 times [2021-02-22 02:21:02,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:02,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172021696] [2021-02-22 02:21:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:02,460 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:02,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:02,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:02,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:02,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:02,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:02,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:02,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:02,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172021696] [2021-02-22 02:21:02,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:02,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:21:02,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136407655] [2021-02-22 02:21:02,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:21:02,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:02,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:21:02,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:21:02,668 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 3 states. [2021-02-22 02:21:02,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:02,975 INFO L93 Difference]: Finished difference Result 193 states and 220 transitions. [2021-02-22 02:21:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:21:02,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2021-02-22 02:21:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:02,986 INFO L225 Difference]: With dead ends: 193 [2021-02-22 02:21:02,986 INFO L226 Difference]: Without dead ends: 81 [2021-02-22 02:21:02,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:21:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-22 02:21:03,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-02-22 02:21:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-22 02:21:03,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2021-02-22 02:21:03,064 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 41 [2021-02-22 02:21:03,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:03,064 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2021-02-22 02:21:03,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:21:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2021-02-22 02:21:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-22 02:21:03,067 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:03,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:03,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:21:03,068 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:03,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:03,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1742045469, now seen corresponding path program 1 times [2021-02-22 02:21:03,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:03,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927618042] [2021-02-22 02:21:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:03,073 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:03,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:03,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:03,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:03,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:03,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:03,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927618042] [2021-02-22 02:21:03,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:03,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:21:03,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704857058] [2021-02-22 02:21:03,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:21:03,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:03,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:21:03,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:03,183 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand 4 states. [2021-02-22 02:21:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:03,384 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2021-02-22 02:21:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:21:03,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-02-22 02:21:03,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:03,395 INFO L225 Difference]: With dead ends: 148 [2021-02-22 02:21:03,396 INFO L226 Difference]: Without dead ends: 93 [2021-02-22 02:21:03,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-22 02:21:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2021-02-22 02:21:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-22 02:21:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2021-02-22 02:21:03,431 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 45 [2021-02-22 02:21:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:03,431 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2021-02-22 02:21:03,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:21:03,432 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2021-02-22 02:21:03,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-22 02:21:03,438 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:03,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:03,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:21:03,440 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:03,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:03,441 INFO L82 PathProgramCache]: Analyzing trace with hash 550833038, now seen corresponding path program 1 times [2021-02-22 02:21:03,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:03,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818444532] [2021-02-22 02:21:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:03,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:03,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:03,529 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:21:03,548 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:21:03,565 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:03,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:03,581 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:21:03,588 WARN L141 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-02-22 02:21:03,591 WARN L147 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size 50 [2021-02-22 02:21:03,592 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:21:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:03,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:03,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:03,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:03,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:03,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:03,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:03,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:03,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:21:03,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:21:03,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:03,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-22 02:21:03,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:03,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:21:03,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 02:21:03,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:03,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:03,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 02:21:03,806 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_#memory_int_20| (Array Int (Array Int Int))) (|v_main_#t~nondet4_9| Int)) (and (<= |v_main_#t~nondet4_9| 127) (<= 0 (+ |v_main_#t~nondet4_9| 128)) (= |c_#memory_int| (store |v_#memory_int_20| |c_main_~#string_A~0.base| (store (select |v_#memory_int_20| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_9|))))) (< c_main_~i~0 5)) is different from true [2021-02-22 02:21:03,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:03,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:03,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 02:21:03,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:03,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:03,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:03,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:03,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:03,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:21:03,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:21:03,883 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_#memory_int_20| (Array Int (Array Int Int))) (|v_main_#t~nondet4_9| Int)) (and (<= |v_main_#t~nondet4_9| 127) (= |c_#memory_int| (store |v_#memory_int_20| |c_main_~#string_A~0.base| (store (select |v_#memory_int_20| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_9|))) (<= 0 (+ |v_main_#t~nondet4_9| 128)))) (< c_main_~i~0 6)) is different from true [2021-02-22 02:21:03,885 WARN L141 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-02-22 02:21:03,885 WARN L147 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size 1 [2021-02-22 02:21:03,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818444532] [2021-02-22 02:21:03,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:03,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-22 02:21:03,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396373349] [2021-02-22 02:21:03,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-22 02:21:03,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:03,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-22 02:21:03,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=85, Unknown=3, NotChecked=38, Total=156 [2021-02-22 02:21:03,889 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 13 states. [2021-02-22 02:21:04,350 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_#memory_int_20| (Array Int (Array Int Int))) (|v_main_#t~nondet4_9| Int)) (and (<= |v_main_#t~nondet4_9| 127) (= |c_#memory_int| (store |v_#memory_int_20| |c_main_~#string_A~0.base| (store (select |v_#memory_int_20| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_9|))) (<= 0 (+ |v_main_#t~nondet4_9| 128)))) (< c_main_~i~0 5) (< c_main_~i~0 6)) is different from true [2021-02-22 02:21:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:04,561 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2021-02-22 02:21:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-22 02:21:04,561 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2021-02-22 02:21:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:04,567 INFO L225 Difference]: With dead ends: 165 [2021-02-22 02:21:04,567 INFO L226 Difference]: Without dead ends: 109 [2021-02-22 02:21:04,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=416, Unknown=32, NotChecked=138, Total=702 [2021-02-22 02:21:04,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-22 02:21:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2021-02-22 02:21:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-22 02:21:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2021-02-22 02:21:04,609 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 59 [2021-02-22 02:21:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:04,610 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2021-02-22 02:21:04,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-22 02:21:04,613 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2021-02-22 02:21:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-02-22 02:21:04,615 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:04,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:04,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:21:04,618 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:04,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:04,619 INFO L82 PathProgramCache]: Analyzing trace with hash -349605437, now seen corresponding path program 2 times [2021-02-22 02:21:04,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:04,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947913632] [2021-02-22 02:21:04,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:04,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:04,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:04,658 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:21:04,661 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:21:04,663 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:04,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:04,675 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:21:04,685 WARN L141 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-02-22 02:21:04,690 WARN L147 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size 50 [2021-02-22 02:21:04,692 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:21:04,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:04,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:04,724 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:21:04,727 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:21:04,734 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:04,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:04,742 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:21:04,746 WARN L141 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-02-22 02:21:04,751 WARN L147 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size 50 [2021-02-22 02:21:04,752 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:21:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:04,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:04,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:04,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:04,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:04,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:04,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:04,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:04,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:04,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:04,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:04,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:21:04,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:21:04,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:04,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-22 02:21:04,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:04,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:21:04,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 02:21:04,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:04,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:04,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:04,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 02:21:04,999 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_#memory_int_30| (Array Int (Array Int Int))) (|v_main_#t~nondet4_19| Int)) (and (<= |v_main_#t~nondet4_19| 127) (= |c_#memory_int| (store |v_#memory_int_30| |c_main_~#string_A~0.base| (store (select |v_#memory_int_30| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_19|))) (<= 0 (+ |v_main_#t~nondet4_19| 128))))) is different from true [2021-02-22 02:21:05,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:05,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:05,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 02:21:05,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:05,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:05,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:05,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:05,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:21:05,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:21:05,078 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_#memory_int_30| (Array Int (Array Int Int))) (|v_main_#t~nondet4_19| Int)) (and (<= |v_main_#t~nondet4_19| 127) (<= 0 (+ |v_main_#t~nondet4_19| 128)) (= |c_#memory_int| (store |v_#memory_int_30| |c_main_~#string_A~0.base| (store (select |v_#memory_int_30| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_19|))))) (< c_main_~i~0 6)) is different from true [2021-02-22 02:21:05,079 WARN L141 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-02-22 02:21:05,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:05,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:21:05,083 WARN L147 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size 28 [2021-02-22 02:21:05,087 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_#memory_int_30| (Array Int (Array Int Int))) (|v_main_#t~nondet4_19| Int)) (and (<= |v_main_#t~nondet4_19| 127) (<= 0 (+ |v_main_#t~nondet4_19| 128)) (= |c_#memory_int| (store |v_#memory_int_30| |c_main_~#string_A~0.base| (store (select |v_#memory_int_30| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_19|)))))) is different from true [2021-02-22 02:21:05,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:05,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:21:05,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:05,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:05,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-22 02:21:05,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:05,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:05,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:05,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-22 02:21:05,204 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_#memory_int_30| (Array Int (Array Int Int))) (|v_main_#t~nondet4_20| Int) (|v_main_#t~nondet4_19| Int)) (and (= (store |v_#memory_int_30| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_30| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_19|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_20|)) |c_#memory_int|) (<= |v_main_#t~nondet4_19| 127) (<= 0 (+ |v_main_#t~nondet4_20| 128)) (<= 0 (+ |v_main_#t~nondet4_19| 128)) (<= |v_main_#t~nondet4_20| 127)))) is different from true [2021-02-22 02:21:05,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:05,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:05,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-22 02:21:05,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:05,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:05,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:05,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:05,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:05,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:21:05,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-22 02:21:05,308 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_#memory_int_30| (Array Int (Array Int Int))) (|v_main_#t~nondet4_20| Int) (|v_main_#t~nondet4_19| Int)) (and (= |c_#memory_int| (store |v_#memory_int_30| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_30| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_19|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_20|))) (<= |v_main_#t~nondet4_19| 127) (<= 0 (+ |v_main_#t~nondet4_20| 128)) (<= 0 (+ |v_main_#t~nondet4_19| 128)) (<= |v_main_#t~nondet4_20| 127))) (< c_main_~i~0 6)) is different from true [2021-02-22 02:21:05,309 WARN L141 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-02-22 02:21:05,309 WARN L147 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size 1 [2021-02-22 02:21:05,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947913632] [2021-02-22 02:21:05,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:05,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-22 02:21:05,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681040093] [2021-02-22 02:21:05,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-22 02:21:05,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:05,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-22 02:21:05,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=217, Unknown=17, NotChecked=170, Total=462 [2021-02-22 02:21:05,312 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand 22 states. [2021-02-22 02:21:06,525 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_#memory_int_30| (Array Int (Array Int Int))) (|v_main_#t~nondet4_20| Int) (|v_main_#t~nondet4_19| Int)) (and (= |c_#memory_int| (store |v_#memory_int_30| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_30| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_19|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_20|))) (<= |v_main_#t~nondet4_19| 127) (<= 0 (+ |v_main_#t~nondet4_20| 128)) (<= 0 (+ |v_main_#t~nondet4_19| 128)) (<= |v_main_#t~nondet4_20| 127))) (< c_main_~i~0 5) (exists ((|v_#memory_int_30| (Array Int (Array Int Int))) (|v_main_#t~nondet4_19| Int)) (and (<= |v_main_#t~nondet4_19| 127) (<= 0 (+ |v_main_#t~nondet4_19| 128)) (= |c_#memory_int| (store |v_#memory_int_30| |c_main_~#string_A~0.base| (store (select |v_#memory_int_30| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_19|))))) (< c_main_~i~0 6)) is different from true [2021-02-22 02:21:06,543 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_#memory_int_30| (Array Int (Array Int Int))) (|v_main_#t~nondet4_19| Int)) (and (<= |v_main_#t~nondet4_19| 127) (= |c_#memory_int| (store |v_#memory_int_30| |c_main_~#string_A~0.base| (store (select |v_#memory_int_30| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_19|))) (<= 0 (+ |v_main_#t~nondet4_19| 128)))) (exists ((|v_#memory_int_30| (Array Int (Array Int Int))) (|v_main_#t~nondet4_20| Int) (|v_main_#t~nondet4_19| Int)) (and (= (store |v_#memory_int_30| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_30| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_19|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_20|)) |c_#memory_int|) (<= |v_main_#t~nondet4_19| 127) (<= 0 (+ |v_main_#t~nondet4_20| 128)) (<= 0 (+ |v_main_#t~nondet4_19| 128)) (<= |v_main_#t~nondet4_20| 127)))) is different from true [2021-02-22 02:21:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:07,091 INFO L93 Difference]: Finished difference Result 186 states and 198 transitions. [2021-02-22 02:21:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-22 02:21:07,092 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 73 [2021-02-22 02:21:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:07,093 INFO L225 Difference]: With dead ends: 186 [2021-02-22 02:21:07,093 INFO L226 Difference]: Without dead ends: 123 [2021-02-22 02:21:07,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=238, Invalid=1330, Unknown=182, NotChecked=602, Total=2352 [2021-02-22 02:21:07,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-02-22 02:21:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2021-02-22 02:21:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-02-22 02:21:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2021-02-22 02:21:07,111 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 73 [2021-02-22 02:21:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:07,111 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2021-02-22 02:21:07,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-22 02:21:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2021-02-22 02:21:07,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-22 02:21:07,113 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:07,113 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:07,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 02:21:07,113 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:07,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:07,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1628250322, now seen corresponding path program 3 times [2021-02-22 02:21:07,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:07,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174100639] [2021-02-22 02:21:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:07,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:07,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:07,136 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:21:07,137 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:21:07,140 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:07,144 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:21:07,148 WARN L141 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-02-22 02:21:07,150 WARN L147 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size 50 [2021-02-22 02:21:07,151 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:21:07,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:07,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:07,167 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:21:07,168 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:21:07,170 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:07,176 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:21:07,179 WARN L141 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-02-22 02:21:07,182 WARN L147 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size 50 [2021-02-22 02:21:07,182 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:21:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:07,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:07,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:07,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:07,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:07,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:07,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:07,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:07,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:07,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:07,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:07,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:07,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:21:07,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:21:07,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:07,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-22 02:21:07,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:21:07,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 02:21:07,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:07,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 02:21:07,416 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_main_#t~nondet4_30| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_30|))) (<= |v_main_#t~nondet4_30| 127))) (< c_main_~i~0 5)) is different from true [2021-02-22 02:21:07,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:07,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 02:21:07,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:07,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:07,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:21:07,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:21:07,488 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_main_#t~nondet4_30| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_30|))) (<= |v_main_#t~nondet4_30| 127))) (< c_main_~i~0 6)) is different from true [2021-02-22 02:21:07,489 WARN L141 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-02-22 02:21:07,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:21:07,492 WARN L147 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size 28 [2021-02-22 02:21:07,496 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_30| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_30|))) (<= |v_main_#t~nondet4_30| 127)))) is different from true [2021-02-22 02:21:07,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:21:07,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:07,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-22 02:21:07,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:07,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:07,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-22 02:21:07,611 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_30| Int) (|v_main_#t~nondet4_31| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= |v_main_#t~nondet4_31| 127) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_31|))) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128))))) is different from true [2021-02-22 02:21:07,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:07,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-22 02:21:07,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:07,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:07,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:21:07,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-22 02:21:07,721 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 6) (exists ((|v_main_#t~nondet4_30| Int) (|v_main_#t~nondet4_31| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= |v_main_#t~nondet4_31| 127) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_31|))) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128))))) is different from true [2021-02-22 02:21:07,722 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-02-22 02:21:07,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:21:07,725 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size 42 [2021-02-22 02:21:07,729 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_30| Int) (|v_main_#t~nondet4_31| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= |v_main_#t~nondet4_31| 127) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_31|))) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128))))) is different from true [2021-02-22 02:21:07,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:21:07,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:07,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-22 02:21:07,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-22 02:21:07,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:07,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:21:07,910 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_30| Int) (|v_#memory_int_41| (Array Int (Array Int Int))) (|v_main_#t~nondet4_31| Int) (|v_main_#t~nondet4_32| Int)) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= 0 (+ |v_main_#t~nondet4_32| 128)) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_31|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_32|))) (<= |v_main_#t~nondet4_31| 127) (<= |v_main_#t~nondet4_32| 127) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128))))) is different from true [2021-02-22 02:21:07,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:07,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:07,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:07,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-22 02:21:08,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:08,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:08,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:08,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:08,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-22 02:21:08,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:08,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:08,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:08,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-22 02:21:08,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-02-22 02:21:08,083 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 6) (exists ((|v_main_#t~nondet4_30| Int) (|v_main_#t~nondet4_31| Int) (|v_#memory_int_41| (Array Int (Array Int Int))) (|v_main_#t~nondet4_32| Int)) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= 0 (+ |v_main_#t~nondet4_32| 128)) (<= |v_main_#t~nondet4_31| 127) (<= |v_main_#t~nondet4_32| 127) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 3)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_31|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_32|))) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128))))) is different from true [2021-02-22 02:21:08,084 WARN L141 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-02-22 02:21:08,085 WARN L147 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size 1 [2021-02-22 02:21:08,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174100639] [2021-02-22 02:21:08,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:08,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-02-22 02:21:08,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852799273] [2021-02-22 02:21:08,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-22 02:21:08,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:08,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-22 02:21:08,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=407, Unknown=43, NotChecked=392, Total=930 [2021-02-22 02:21:08,088 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand 31 states. [2021-02-22 02:21:10,791 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_30| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_30|))) (<= |v_main_#t~nondet4_30| 127))) (< c_main_~i~0 6) (exists ((|v_main_#t~nondet4_30| Int) (|v_main_#t~nondet4_31| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= |v_main_#t~nondet4_31| 127) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_31|))) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128)))) (exists ((|v_main_#t~nondet4_30| Int) (|v_main_#t~nondet4_31| Int) (|v_#memory_int_41| (Array Int (Array Int Int))) (|v_main_#t~nondet4_32| Int)) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= 0 (+ |v_main_#t~nondet4_32| 128)) (<= |v_main_#t~nondet4_31| 127) (<= |v_main_#t~nondet4_32| 127) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 3)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_31|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_32|))) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128))))) is different from true [2021-02-22 02:21:10,797 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_30| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_30|))) (<= |v_main_#t~nondet4_30| 127))) (exists ((|v_main_#t~nondet4_30| Int) (|v_main_#t~nondet4_31| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= |v_main_#t~nondet4_31| 127) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_31|))) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128))))) is different from true [2021-02-22 02:21:11,066 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_main_#t~nondet4_30| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_30|))) (<= |v_main_#t~nondet4_30| 127))) (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_30| Int) (|v_main_#t~nondet4_31| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= |v_main_#t~nondet4_31| 127) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_31|))) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128)))) (exists ((|v_main_#t~nondet4_30| Int) (|v_#memory_int_41| (Array Int (Array Int Int))) (|v_main_#t~nondet4_31| Int) (|v_main_#t~nondet4_32| Int)) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= 0 (+ |v_main_#t~nondet4_32| 128)) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_31|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_32|))) (<= |v_main_#t~nondet4_31| 127) (<= |v_main_#t~nondet4_32| 127) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128))))) is different from true [2021-02-22 02:21:11,262 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_main_#t~nondet4_30| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_30|))) (<= |v_main_#t~nondet4_30| 127))) (< c_main_~i~0 6) (exists ((|v_main_#t~nondet4_30| Int) (|v_main_#t~nondet4_31| Int) (|v_#memory_int_41| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= |v_main_#t~nondet4_31| 127) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_31|))) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128)))) (exists ((|v_main_#t~nondet4_30| Int) (|v_main_#t~nondet4_31| Int) (|v_#memory_int_41| (Array Int (Array Int Int))) (|v_main_#t~nondet4_32| Int)) (and (<= 0 (+ |v_main_#t~nondet4_30| 128)) (<= 0 (+ |v_main_#t~nondet4_32| 128)) (<= |v_main_#t~nondet4_31| 127) (<= |v_main_#t~nondet4_32| 127) (= |c_#memory_int| (store |v_#memory_int_41| |c_main_~#string_A~0.base| (store (store (store (select |v_#memory_int_41| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 3)) |v_main_#t~nondet4_30|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_31|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_32|))) (<= |v_main_#t~nondet4_30| 127) (<= 0 (+ |v_main_#t~nondet4_31| 128))))) is different from true [2021-02-22 02:21:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:11,780 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2021-02-22 02:21:11,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-22 02:21:11,781 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 87 [2021-02-22 02:21:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:11,782 INFO L225 Difference]: With dead ends: 207 [2021-02-22 02:21:11,783 INFO L226 Difference]: Without dead ends: 137 [2021-02-22 02:21:11,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=374, Invalid=2548, Unknown=318, NotChecked=1452, Total=4692 [2021-02-22 02:21:11,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-02-22 02:21:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2021-02-22 02:21:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-02-22 02:21:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2021-02-22 02:21:11,826 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 87 [2021-02-22 02:21:11,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:11,829 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2021-02-22 02:21:11,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-02-22 02:21:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2021-02-22 02:21:11,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-02-22 02:21:11,840 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:11,841 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:11,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 02:21:11,841 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:11,842 INFO L82 PathProgramCache]: Analyzing trace with hash 419933347, now seen corresponding path program 4 times [2021-02-22 02:21:11,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:11,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335043169] [2021-02-22 02:21:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:11,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:11,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:11,880 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:21:11,881 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:21:11,883 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:11,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:11,887 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:21:11,891 WARN L141 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-02-22 02:21:11,894 WARN L147 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size 50 [2021-02-22 02:21:11,894 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:21:11,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:11,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:11,906 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:21:11,907 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:21:11,909 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:11,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:11,915 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:21:11,918 WARN L141 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-02-22 02:21:11,920 WARN L147 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size 50 [2021-02-22 02:21:11,921 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:21:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:11,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:11,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:11,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:11,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:11,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:11,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:12,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:12,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:12,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:12,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:12,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:12,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:12,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:12,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:21:12,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:21:12,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:12,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-22 02:21:12,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:21:12,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 02:21:12,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:12,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 02:21:12,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:12,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 02:21:12,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 02:21:12,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:12,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:21:12,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:21:12,288 WARN L141 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-02-22 02:21:12,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:21:12,291 WARN L147 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size 28 [2021-02-22 02:21:12,294 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_42|)) |c_#memory_int|) (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= |v_main_#t~nondet4_42| 127)))) is different from true [2021-02-22 02:21:12,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:21:12,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:12,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-22 02:21:12,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:12,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:12,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-22 02:21:12,408 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_43| Int)) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (= (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_43|)) |c_#memory_int|)))) is different from true [2021-02-22 02:21:12,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:12,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-22 02:21:12,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:12,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:12,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:21:12,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-22 02:21:12,521 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_43| Int)) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_43|))))) (< c_main_~i~0 6)) is different from true [2021-02-22 02:21:12,522 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-02-22 02:21:12,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:21:12,525 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size 42 [2021-02-22 02:21:12,529 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_43| Int)) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_43|))))) (< c_main_~i~0 5)) is different from true [2021-02-22 02:21:12,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:21:12,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:12,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-22 02:21:12,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-22 02:21:12,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:12,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:21:12,706 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_43| Int) (|v_main_#t~nondet4_44| Int)) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_44| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_43|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_44|))) (<= |v_main_#t~nondet4_42| 127) (<= |v_main_#t~nondet4_44| 127)))) is different from true [2021-02-22 02:21:12,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:12,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-22 02:21:12,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-22 02:21:12,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-22 02:21:12,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-22 02:21:12,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-02-22 02:21:12,876 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 6) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_43| Int) (|v_main_#t~nondet4_44| Int)) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_44| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (<= |v_main_#t~nondet4_44| 127) (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 3)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_43|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_44|)))))) is different from true [2021-02-22 02:21:12,877 WARN L141 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-02-22 02:21:12,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-22 02:21:12,881 WARN L147 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size 56 [2021-02-22 02:21:12,886 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_43| Int) (|v_main_#t~nondet4_44| Int)) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_44| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (<= |v_main_#t~nondet4_44| 127) (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 3)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_43|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_44|)))))) is different from true [2021-02-22 02:21:12,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:12,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:12,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-22 02:21:12,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-22 02:21:13,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:13,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:13,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:13,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:21:13,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-02-22 02:21:13,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:13,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:13,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:13,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-22 02:21:13,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-02-22 02:21:13,162 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_45| Int) (|v_main_#t~nondet4_43| Int) (|v_main_#t~nondet4_44| Int)) (and (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 3)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_43|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_44|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_45|))) (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_44| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (<= 0 (+ |v_main_#t~nondet4_45| 128)) (<= |v_main_#t~nondet4_44| 127) (<= |v_main_#t~nondet4_45| 127)))) is different from true [2021-02-22 02:21:13,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:13,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:13,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:13,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-22 02:21:13,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-02-22 02:21:13,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:13,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:13,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:13,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-22 02:21:13,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-02-22 02:21:13,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:13,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:13,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-02-22 02:21:13,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-02-22 02:21:13,385 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_45| Int) (|v_main_#t~nondet4_43| Int) (|v_main_#t~nondet4_44| Int)) (and (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 4)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 3)) |v_main_#t~nondet4_43|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_44|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_45|))) (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_44| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (<= 0 (+ |v_main_#t~nondet4_45| 128)) (<= |v_main_#t~nondet4_44| 127) (<= |v_main_#t~nondet4_45| 127))) (< c_main_~i~0 6)) is different from true [2021-02-22 02:21:13,386 WARN L141 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-02-22 02:21:13,386 WARN L147 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size 1 [2021-02-22 02:21:13,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335043169] [2021-02-22 02:21:13,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:13,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-02-22 02:21:13,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254266934] [2021-02-22 02:21:13,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-02-22 02:21:13,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:13,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-02-22 02:21:13,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=674, Unknown=111, NotChecked=576, Total=1482 [2021-02-22 02:21:13,389 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 39 states. [2021-02-22 02:21:17,232 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_43| Int)) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_43|))))) (<= c_main_~i~0 4) (< c_main_~i~0 5) (<= c_main_~i~0 5) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_43| Int) (|v_main_#t~nondet4_44| Int)) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_44| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (<= |v_main_#t~nondet4_44| 127) (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 3)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_43|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_44|))))) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_42|)) |c_#memory_int|) (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= |v_main_#t~nondet4_42| 127)))) is different from true [2021-02-22 02:21:17,675 WARN L860 $PredicateComparison]: unable to prove that (and (<= c_main_~i~0 4) (< c_main_~i~0 5) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_43| Int) (|v_main_#t~nondet4_44| Int)) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_44| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_43|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_44|))) (<= |v_main_#t~nondet4_42| 127) (<= |v_main_#t~nondet4_44| 127))) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_45| Int) (|v_main_#t~nondet4_43| Int) (|v_main_#t~nondet4_44| Int)) (and (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 3)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 2)) |v_main_#t~nondet4_43|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_44|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_45|))) (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_44| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (<= 0 (+ |v_main_#t~nondet4_45| 128)) (<= |v_main_#t~nondet4_44| 127) (<= |v_main_#t~nondet4_45| 127))) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_main_#t~nondet4_43| Int)) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= 0 (+ |v_main_#t~nondet4_43| 128)) (<= |v_main_#t~nondet4_43| 127) (<= |v_main_#t~nondet4_42| 127) (= (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset| (- 1)) |v_main_#t~nondet4_42|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_43|)) |c_#memory_int|))) (exists ((|v_main_#t~nondet4_42| Int) (|v_#memory_int_53| (Array Int (Array Int Int)))) (and (<= 0 (+ |v_main_#t~nondet4_42| 128)) (<= |v_main_#t~nondet4_42| 127) (= |c_#memory_int| (store |v_#memory_int_53| |c_main_~#string_A~0.base| (store (select |v_#memory_int_53| |c_main_~#string_A~0.base|) (+ c_main_~i~0 |c_main_~#string_A~0.offset|) |v_main_#t~nondet4_42|)))))) is different from true [2021-02-22 02:21:19,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:19,236 INFO L93 Difference]: Finished difference Result 216 states and 227 transitions. [2021-02-22 02:21:19,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-02-22 02:21:19,237 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 101 [2021-02-22 02:21:19,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:19,239 INFO L225 Difference]: With dead ends: 216 [2021-02-22 02:21:19,239 INFO L226 Difference]: Without dead ends: 139 [2021-02-22 02:21:19,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=456, Invalid=3500, Unknown=510, NotChecked=1540, Total=6006 [2021-02-22 02:21:19,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-02-22 02:21:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-02-22 02:21:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-02-22 02:21:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 144 transitions. [2021-02-22 02:21:19,280 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 144 transitions. Word has length 101 [2021-02-22 02:21:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:19,280 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 144 transitions. [2021-02-22 02:21:19,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-02-22 02:21:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 144 transitions. [2021-02-22 02:21:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-02-22 02:21:19,281 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:19,282 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:19,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-22 02:21:19,282 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:19,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:19,283 INFO L82 PathProgramCache]: Analyzing trace with hash -645158194, now seen corresponding path program 5 times [2021-02-22 02:21:19,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:19,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433374035] [2021-02-22 02:21:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:19,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:19,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:19,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:19,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:19,306 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:21:19,307 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:21:19,309 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:19,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:19,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:19,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:19,313 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:21:19,315 WARN L141 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-02-22 02:21:19,317 WARN L147 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size 50 [2021-02-22 02:21:19,317 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:21:19,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:19,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:19,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:19,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:21:19,329 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:21:19,329 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:21:19,331 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:19,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:21:19,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:19,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:21:19,334 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:21:19,336 WARN L141 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size [2021-02-22 02:21:19,337 WARN L147 QuantifierPusher]: treesize reduction 11, result has 82.0 percent of original size 50 [2021-02-22 02:21:19,338 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:21:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:21:19,370 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:21:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:21:19,396 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:21:19,433 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:21:19,433 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:21:19,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-22 02:21:19,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:21:19 BoogieIcfgContainer [2021-02-22 02:21:19,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:21:19,456 INFO L168 Benchmark]: Toolchain (without parser) took 18211.55 ms. Allocated memory was 154.1 MB in the beginning and 232.8 MB in the end (delta: 78.6 MB). Free memory was 130.4 MB in the beginning and 117.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 92.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:19,456 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 154.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:21:19,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.71 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 119.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:19,457 INFO L168 Benchmark]: Boogie Preprocessor took 41.98 ms. Allocated memory is still 154.1 MB. Free memory was 119.1 MB in the beginning and 117.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:19,463 INFO L168 Benchmark]: RCFGBuilder took 697.81 ms. Allocated memory is still 154.1 MB. Free memory was 117.3 MB in the beginning and 126.8 MB in the end (delta: -9.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:19,465 INFO L168 Benchmark]: TraceAbstraction took 17187.71 ms. Allocated memory was 154.1 MB in the beginning and 232.8 MB in the end (delta: 78.6 MB). Free memory was 126.2 MB in the beginning and 117.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 87.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:19,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 154.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.71 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 119.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.98 ms. Allocated memory is still 154.1 MB. Free memory was 119.1 MB in the beginning and 117.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 697.81 ms. Allocated memory is still 154.1 MB. Free memory was 117.3 MB in the beginning and 126.8 MB in the end (delta: -9.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17187.71 ms. Allocated memory was 154.1 MB in the beginning and 232.8 MB in the end (delta: 78.6 MB). Free memory was 126.2 MB in the beginning and 117.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 87.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 69. Possible FailurePath: [L31] char string_A[5], string_B[5]; [L32] int i, j, nc_A, nc_B, found=0; [L35] i=0 [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND FALSE !(i<5) [L37] EXPR string_A[5 -1] [L37] COND FALSE !(!(string_A[5 -1]=='\0')) [L39] i=0 [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND FALSE !(i<5) [L41] EXPR string_B[5 -1] [L41] COND FALSE !(!(string_B[5 -1]=='\0')) [L43] nc_A = 0 [L44] EXPR string_A[nc_A] [L44] COND FALSE !(string_A[nc_A]!='\0') [L47] nc_B = 0 [L48] EXPR string_B[nc_B] [L48] COND FALSE !(string_B[nc_B]!='\0') [L51] COND FALSE !(!(nc_B >= nc_A)) [L54] EXPR j=0 [L54] i=j=0 [L55] COND FALSE !((inc_B-1)<