/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/array-fpi/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:47,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:47,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:47,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:47,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:47,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:47,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:47,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:47,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:47,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:47,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:47,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:47,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:47,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:47,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:47,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:47,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:47,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:47,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:47,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:47,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:47,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:47,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:47,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:47,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:46:47,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:46:47,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:46:47,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:46:47,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:46:47,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:46:47,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:46:47,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:46:47,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:46:47,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:46:47,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:46:47,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:46:47,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:46:47,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:46:47,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:47,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:47,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:47,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:46:47,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:47,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:47,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:47,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:47,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:47,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:47,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:47,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:47,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:47,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:47,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:47,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:47,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:47,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:47,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:47,682 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:47,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:47,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:47,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:47,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:47,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:47,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:47,683 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:47,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:48,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:48,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:48,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:48,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:48,117 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:48,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2021-02-24 04:46:48,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5a48044/269c5566cd174634bb447cda7f4f207a/FLAG46172a749 [2021-02-24 04:46:48,862 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:48,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3iff.c [2021-02-24 04:46:48,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5a48044/269c5566cd174634bb447cda7f4f207a/FLAG46172a749 [2021-02-24 04:46:49,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5a48044/269c5566cd174634bb447cda7f4f207a [2021-02-24 04:46:49,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:49,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:49,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:49,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:49,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:49,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:49" (1/1) ... [2021-02-24 04:46:49,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bba1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49, skipping insertion in model container [2021-02-24 04:46:49,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:49" (1/1) ... [2021-02-24 04:46:49,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:49,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:49,423 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3iff.c[588,601] [2021-02-24 04:46:49,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:49,458 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:49,473 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3iff.c[588,601] [2021-02-24 04:46:49,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:49,503 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:49,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49 WrapperNode [2021-02-24 04:46:49,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:49,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:49,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:49,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:49,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49" (1/1) ... [2021-02-24 04:46:49,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49" (1/1) ... [2021-02-24 04:46:49,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49" (1/1) ... [2021-02-24 04:46:49,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49" (1/1) ... [2021-02-24 04:46:49,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49" (1/1) ... [2021-02-24 04:46:49,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49" (1/1) ... [2021-02-24 04:46:49,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49" (1/1) ... [2021-02-24 04:46:49,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:49,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:49,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:49,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:49,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49" (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 [2021-02-24 04:46:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:50,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:50,291 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 04:46:50,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:50 BoogieIcfgContainer [2021-02-24 04:46:50,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:50,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:50,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:50,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:50,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:49" (1/3) ... [2021-02-24 04:46:50,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe9b17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:50, skipping insertion in model container [2021-02-24 04:46:50,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:49" (2/3) ... [2021-02-24 04:46:50,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe9b17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:50, skipping insertion in model container [2021-02-24 04:46:50,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:50" (3/3) ... [2021-02-24 04:46:50,308 INFO L111 eAbstractionObserver]: Analyzing ICFG s3iff.c [2021-02-24 04:46:50,315 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:50,321 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:50,346 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:50,387 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:50,388 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:50,388 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:50,388 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:50,388 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:50,388 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:50,388 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:50,389 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-24 04:46:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:46:50,431 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:50,432 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] [2021-02-24 04:46:50,433 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:50,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:50,443 INFO L82 PathProgramCache]: Analyzing trace with hash 137751759, now seen corresponding path program 1 times [2021-02-24 04:46:50,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:50,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874501190] [2021-02-24 04:46:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:50,554 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:50,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:50,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:50,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:50,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:50,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:50,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:50,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:50,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:50,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:50,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874501190] [2021-02-24 04:46:50,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:50,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:50,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442429064] [2021-02-24 04:46:50,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:50,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:50,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:50,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:50,967 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-24 04:46:51,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:51,269 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-02-24 04:46:51,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:51,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-24 04:46:51,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:51,283 INFO L225 Difference]: With dead ends: 119 [2021-02-24 04:46:51,283 INFO L226 Difference]: Without dead ends: 58 [2021-02-24 04:46:51,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-24 04:46:51,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-24 04:46:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-24 04:46:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-02-24 04:46:51,343 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 36 [2021-02-24 04:46:51,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:51,344 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-02-24 04:46:51,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:51,344 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-02-24 04:46:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:46:51,346 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:51,346 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] [2021-02-24 04:46:51,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:51,347 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:51,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1632327928, now seen corresponding path program 1 times [2021-02-24 04:46:51,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:51,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282452571] [2021-02-24 04:46:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:51,352 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:51,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:51,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:51,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:51,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:51,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:51,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:51,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:51,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:51,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:51,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:51,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:51,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:51,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:51,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:51,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282452571] [2021-02-24 04:46:51,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:51,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:51,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144852139] [2021-02-24 04:46:51,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:51,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:51,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:51,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:51,548 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2021-02-24 04:46:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:52,004 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-02-24 04:46:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:52,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-24 04:46:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:52,007 INFO L225 Difference]: With dead ends: 104 [2021-02-24 04:46:52,007 INFO L226 Difference]: Without dead ends: 79 [2021-02-24 04:46:52,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:46:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-24 04:46:52,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2021-02-24 04:46:52,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 04:46:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-24 04:46:52,026 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 36 [2021-02-24 04:46:52,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:52,026 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-24 04:46:52,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:52,027 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-24 04:46:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 04:46:52,029 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:52,029 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] [2021-02-24 04:46:52,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:52,029 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:52,030 INFO L82 PathProgramCache]: Analyzing trace with hash -881259695, now seen corresponding path program 1 times [2021-02-24 04:46:52,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:52,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678739286] [2021-02-24 04:46:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:52,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:52,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:52,098 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:52,115 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:52,122 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:52,125 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:52,126 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:52,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:52,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:46:52,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:46:52,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:46:52,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:46:52,409 WARN L141 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-02-24 04:46:52,410 WARN L147 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size 16 [2021-02-24 04:46:52,433 WARN L141 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size [2021-02-24 04:46:52,434 WARN L147 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size 27 [2021-02-24 04:46:52,468 WARN L141 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size [2021-02-24 04:46:52,469 WARN L147 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size 27 [2021-02-24 04:46:52,514 WARN L141 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-02-24 04:46:52,515 WARN L147 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size 29 [2021-02-24 04:46:52,585 WARN L141 QuantifierPusher]: treesize reduction 55, result has 36.8 percent of original size [2021-02-24 04:46:52,586 WARN L147 QuantifierPusher]: treesize reduction 55, result has 36.8 percent of original size 32 [2021-02-24 04:46:52,643 WARN L141 QuantifierPusher]: treesize reduction 15, result has 53.1 percent of original size [2021-02-24 04:46:52,644 WARN L147 QuantifierPusher]: treesize reduction 15, result has 53.1 percent of original size 17 [2021-02-24 04:46:52,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:46:52,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:46:52,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:46:52,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:46:52,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:52,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:52,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:52,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:52,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:52,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:52,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 04:46:52,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:46:53,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 04:46:53,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 04:46:53,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 04:46:53,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-24 04:46:53,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 04:46:53,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-24 04:46:53,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 04:46:53,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:46:53,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,338 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size [2021-02-24 04:46:53,341 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-02-24 04:46:53,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-24 04:46:53,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:53,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678739286] [2021-02-24 04:46:53,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:53,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-24 04:46:53,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563886994] [2021-02-24 04:46:53,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-24 04:46:53,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:53,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-24 04:46:53,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=533, Unknown=12, NotChecked=0, Total=650 [2021-02-24 04:46:53,423 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 24 states. [2021-02-24 04:46:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:54,925 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2021-02-24 04:46:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-24 04:46:54,926 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2021-02-24 04:46:54,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:54,928 INFO L225 Difference]: With dead ends: 96 [2021-02-24 04:46:54,928 INFO L226 Difference]: Without dead ends: 90 [2021-02-24 04:46:54,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=203, Invalid=1187, Unknown=16, NotChecked=0, Total=1406 [2021-02-24 04:46:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-02-24 04:46:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2021-02-24 04:46:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 04:46:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-02-24 04:46:54,948 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 53 [2021-02-24 04:46:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:54,949 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-02-24 04:46:54,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-24 04:46:54,949 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-02-24 04:46:54,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 04:46:54,951 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:54,951 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] [2021-02-24 04:46:54,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:54,952 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:54,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:54,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1326966967, now seen corresponding path program 1 times [2021-02-24 04:46:54,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:54,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980430907] [2021-02-24 04:46:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:54,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:54,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:54,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:54,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:54,967 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:54,970 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:54,973 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:54,975 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:54,976 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:55,007 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 04:46:55,008 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:55,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:46:55,035 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 04:46:55,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:55 BoogieIcfgContainer [2021-02-24 04:46:55,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:55,040 INFO L168 Benchmark]: Toolchain (without parser) took 5832.78 ms. Allocated memory was 156.2 MB in the beginning and 192.9 MB in the end (delta: 36.7 MB). Free memory was 133.1 MB in the beginning and 136.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,041 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory was 128.8 MB in the beginning and 128.7 MB in the end (delta: 108.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:55,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.71 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 121.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,047 INFO L168 Benchmark]: Boogie Preprocessor took 45.40 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 120.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,048 INFO L168 Benchmark]: RCFGBuilder took 742.46 ms. Allocated memory is still 156.2 MB. Free memory was 120.1 MB in the beginning and 136.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,052 INFO L168 Benchmark]: TraceAbstraction took 4738.96 ms. Allocated memory was 156.2 MB in the beginning and 192.9 MB in the end (delta: 36.7 MB). Free memory was 136.2 MB in the beginning and 136.6 MB in the end (delta: -376.3 kB). Peak memory consumption was 36.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory was 128.8 MB in the beginning and 128.7 MB in the end (delta: 108.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.71 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 121.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.40 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 120.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 742.46 ms. Allocated memory is still 156.2 MB. Free memory was 120.1 MB in the beginning and 136.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4738.96 ms. Allocated memory was 156.2 MB in the beginning and 192.9 MB in the end (delta: 36.7 MB). Free memory was 136.2 MB in the beginning and 136.6 MB in the end (delta: -376.3 kB). Peak memory consumption was 36.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i