/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/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:19:51,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:19:51,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:19:51,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:19:51,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:19:51,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:19:51,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:19:51,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:19:51,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:19:51,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:19:51,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:19:51,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:19:51,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:19:51,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:19:51,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:19:51,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:19:51,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:19:51,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:19:51,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:19:51,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:19:51,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:19:51,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:19:51,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:19:51,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:19:51,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:19:51,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:19:51,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:19:51,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:19:51,842 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 02:19:51,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:19:51,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:19:51,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:19:51,859 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:19:51,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:19:51,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:19:51,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:19:51,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:19:51,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:19:51,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:19:51,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:19:51,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:19:51,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:19:51,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:19:51,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:19:51,862 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:19:51,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:19:51,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:19:51,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:19:51,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:19:51,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:19:51,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:19:51,864 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:19:51,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:19:52,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:19:52,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:19:52,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:19:52,307 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:19:52,308 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:19:52,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2021-02-22 02:19:52,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff0302ed/714c1814f4f944d3b7ad3079246146c3/FLAG5f8c91893 [2021-02-22 02:19:53,096 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:19:53,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c [2021-02-22 02:19:53,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff0302ed/714c1814f4f944d3b7ad3079246146c3/FLAG5f8c91893 [2021-02-22 02:19:53,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff0302ed/714c1814f4f944d3b7ad3079246146c3 [2021-02-22 02:19:53,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:19:53,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:19:53,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:19:53,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:19:53,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:19:53,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:19:53" (1/1) ... [2021-02-22 02:19:53,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11715568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53, skipping insertion in model container [2021-02-22 02:19:53,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:19:53" (1/1) ... [2021-02-22 02:19:53,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:19:53,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:19:53,699 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/condnf.c[589,602] [2021-02-22 02:19:53,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:19:53,730 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:19:53,746 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/condnf.c[589,602] [2021-02-22 02:19:53,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:19:53,773 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:19:53,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53 WrapperNode [2021-02-22 02:19:53,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:19:53,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:19:53,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:19:53,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:19:53,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53" (1/1) ... [2021-02-22 02:19:53,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53" (1/1) ... [2021-02-22 02:19:53,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53" (1/1) ... [2021-02-22 02:19:53,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53" (1/1) ... [2021-02-22 02:19:53,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53" (1/1) ... [2021-02-22 02:19:53,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53" (1/1) ... [2021-02-22 02:19:53,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53" (1/1) ... [2021-02-22 02:19:53,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:19:53,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:19:53,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:19:53,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:19:53,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53" (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 02:19:53,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:19:53,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:19:53,955 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:19:53,955 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:19:53,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:19:53,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:19:53,956 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:19:53,956 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:19:53,956 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:19:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:19:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:19:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:19:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:19:53,958 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:19:53,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:19:53,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:19:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:19:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:19:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:19:53,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:19:53,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:19:53,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:19:54,560 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:19:54,560 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-22 02:19:54,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:19:54 BoogieIcfgContainer [2021-02-22 02:19:54,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:19:54,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:19:54,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:19:54,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:19:54,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:19:53" (1/3) ... [2021-02-22 02:19:54,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282d706d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:19:54, skipping insertion in model container [2021-02-22 02:19:54,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:53" (2/3) ... [2021-02-22 02:19:54,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282d706d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:19:54, skipping insertion in model container [2021-02-22 02:19:54,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:19:54" (3/3) ... [2021-02-22 02:19:54,572 INFO L111 eAbstractionObserver]: Analyzing ICFG condnf.c [2021-02-22 02:19:54,582 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:19:54,590 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:19:54,610 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:19:54,638 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:19:54,638 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:19:54,638 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:19:54,638 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:19:54,639 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:19:54,639 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:19:54,639 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:19:54,639 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:19:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2021-02-22 02:19:54,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-22 02:19:54,670 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:54,670 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] [2021-02-22 02:19:54,671 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:54,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:54,678 INFO L82 PathProgramCache]: Analyzing trace with hash -407844847, now seen corresponding path program 1 times [2021-02-22 02:19:54,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:54,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075787547] [2021-02-22 02:19:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:54,780 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:19:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:54,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:54,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:54,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:54,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:54,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:19:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:55,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:55,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:19:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:55,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:55,029 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 02:19:55,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075787547] [2021-02-22 02:19:55,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:19:55,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:19:55,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268599428] [2021-02-22 02:19:55,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:19:55,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:19:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:19:55,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:19:55,064 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2021-02-22 02:19:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:19:55,277 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2021-02-22 02:19:55,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:19:55,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-22 02:19:55,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:19:55,291 INFO L225 Difference]: With dead ends: 113 [2021-02-22 02:19:55,291 INFO L226 Difference]: Without dead ends: 60 [2021-02-22 02:19:55,295 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 [2021-02-22 02:19:55,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-22 02:19:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-02-22 02:19:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-22 02:19:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-02-22 02:19:55,361 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 36 [2021-02-22 02:19:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:19:55,362 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-02-22 02:19:55,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:19:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-02-22 02:19:55,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-22 02:19:55,365 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:55,365 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] [2021-02-22 02:19:55,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:19:55,366 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:55,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:55,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1753803708, now seen corresponding path program 1 times [2021-02-22 02:19:55,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:55,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578465732] [2021-02-22 02:19:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:55,372 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:19:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:55,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:55,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:19:55,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:19:55,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:55,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:19:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:55,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:55,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:19:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:55,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:55,575 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 02:19:55,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578465732] [2021-02-22 02:19:55,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:19:55,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:19:55,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339903638] [2021-02-22 02:19:55,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:19:55,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:19:55,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:19:55,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:19:55,580 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 5 states. [2021-02-22 02:19:55,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:19:55,850 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2021-02-22 02:19:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:19:55,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-22 02:19:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:19:55,854 INFO L225 Difference]: With dead ends: 110 [2021-02-22 02:19:55,855 INFO L226 Difference]: Without dead ends: 83 [2021-02-22 02:19:55,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:19:55,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-22 02:19:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 62. [2021-02-22 02:19:55,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-22 02:19:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-02-22 02:19:55,878 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 36 [2021-02-22 02:19:55,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:19:55,878 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-02-22 02:19:55,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:19:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-02-22 02:19:55,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-22 02:19:55,880 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:55,881 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] [2021-02-22 02:19:55,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:19:55,881 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:55,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:55,882 INFO L82 PathProgramCache]: Analyzing trace with hash 146462172, now seen corresponding path program 1 times [2021-02-22 02:19:55,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:55,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739797649] [2021-02-22 02:19:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:55,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:19:55,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:19:55,969 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:19:55,986 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:19:55,992 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:55,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:55,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:19:56,007 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:19:56,016 WARN L141 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size [2021-02-22 02:19:56,020 WARN L147 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size 50 [2021-02-22 02:19:56,021 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:19:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:56,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:56,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:19:56,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:19:56,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:19:56,234 WARN L141 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-02-22 02:19:56,235 WARN L147 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size 11 [2021-02-22 02:19:56,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:19:56,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:19:56,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:19:56,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:19:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:56,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:56,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:19:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:56,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:56,363 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 02:19:56,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:56,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:19:56,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:19:56,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:19:56,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-22 02:19:56,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:56,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:19:56,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-22 02:19:56,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:56,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-22 02:19:56,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-22 02:19:56,484 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 c_~N~0) (exists ((|v_#memory_int_19| (Array Int (Array Int Int))) (|v_main_#t~nondet10_9| Int)) (and (<= 0 (+ |v_main_#t~nondet10_9| 2147483648)) (= |c_#memory_int| (store |v_#memory_int_19| c_main_~a~0.base (store (select |v_#memory_int_19| c_main_~a~0.base) (+ (* c_main_~i~0 4) c_main_~a~0.offset) |v_main_#t~nondet10_9|))) (<= |v_main_#t~nondet10_9| 2147483647)))) is different from true [2021-02-22 02:19:56,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:56,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-22 02:19:56,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-22 02:19:56,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:56,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-22 02:19:56,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:19:56,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:56,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:19:56,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-22 02:19:56,601 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 (+ c_~N~0 1)) (exists ((|v_#memory_int_19| (Array Int (Array Int Int))) (|v_main_#t~nondet10_9| Int)) (and (<= 0 (+ |v_main_#t~nondet10_9| 2147483648)) (<= |v_main_#t~nondet10_9| 2147483647) (= |c_#memory_int| (store |v_#memory_int_19| c_main_~a~0.base (store (select |v_#memory_int_19| c_main_~a~0.base) (+ (* c_main_~i~0 4) c_main_~a~0.offset (- 4)) |v_main_#t~nondet10_9|)))))) is different from true [2021-02-22 02:19:56,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:56,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:56,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739797649] [2021-02-22 02:19:56,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:19:56,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-22 02:19:56,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991706038] [2021-02-22 02:19:56,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-22 02:19:56,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:19:56,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-22 02:19:56,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=177, Unknown=3, NotChecked=54, Total=272 [2021-02-22 02:19:56,607 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 17 states. [2021-02-22 02:19:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:19:57,553 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-02-22 02:19:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-22 02:19:57,554 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2021-02-22 02:19:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:19:57,565 INFO L225 Difference]: With dead ends: 118 [2021-02-22 02:19:57,565 INFO L226 Difference]: Without dead ends: 116 [2021-02-22 02:19:57,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=632, Unknown=9, NotChecked=106, Total=870 [2021-02-22 02:19:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-02-22 02:19:57,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 78. [2021-02-22 02:19:57,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-22 02:19:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-02-22 02:19:57,614 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 51 [2021-02-22 02:19:57,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:19:57,615 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-02-22 02:19:57,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-22 02:19:57,616 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-02-22 02:19:57,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-22 02:19:57,619 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:57,620 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] [2021-02-22 02:19:57,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:19:57,621 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:57,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:57,622 INFO L82 PathProgramCache]: Analyzing trace with hash -904490591, now seen corresponding path program 1 times [2021-02-22 02:19:57,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:57,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921245064] [2021-02-22 02:19:57,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:57,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:57,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:19:57,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:57,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:19:57,644 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:19:57,646 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:19:57,648 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:57,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:57,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:57,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:19:57,655 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:19:57,659 WARN L141 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size [2021-02-22 02:19:57,662 WARN L147 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size 50 [2021-02-22 02:19:57,663 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:19:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:19:57,695 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:19:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:19:57,722 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:19:57,769 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:19:57,770 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:19:57,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 02:19:57,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:19:57 BoogieIcfgContainer [2021-02-22 02:19:57,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:19:57,798 INFO L168 Benchmark]: Toolchain (without parser) took 4312.97 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 127.8 MB in the beginning and 73.5 MB in the end (delta: 54.4 MB). Peak memory consumption was 85.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:57,799 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:19:57,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.52 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 116.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:57,807 INFO L168 Benchmark]: Boogie Preprocessor took 44.94 ms. Allocated memory is still 152.0 MB. Free memory was 116.8 MB in the beginning and 115.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:57,809 INFO L168 Benchmark]: RCFGBuilder took 741.63 ms. Allocated memory is still 152.0 MB. Free memory was 115.3 MB in the beginning and 124.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:57,810 INFO L168 Benchmark]: TraceAbstraction took 3227.73 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 123.9 MB in the beginning and 73.5 MB in the end (delta: 50.4 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:57,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.52 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 116.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.94 ms. Allocated memory is still 152.0 MB. Free memory was 116.8 MB in the beginning and 115.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 741.63 ms. Allocated memory is still 152.0 MB. Free memory was 115.3 MB in the beginning and 124.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3227.73 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 123.9 MB in the beginning and 73.5 MB in the end (delta: 50.4 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a 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] int *a = malloc(sizeof(int)*N); [L30] i=0 [L30] COND TRUE i N [L38] EXPR a[i] [L38] a[i] = a[i] [L35] i++ [L35] COND FALSE !(i