/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:46:48,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:46:48,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:46:48,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:46:48,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:46:48,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:46:48,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:46:48,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:46:48,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:46:48,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:46:48,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:46:48,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:46:48,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:46:48,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:46:48,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:46:48,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:46:48,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:46:48,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:46:48,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:46:48,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:46:48,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:46:48,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:46:48,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:46:48,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:46:48,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:46:48,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:46:48,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:46:48,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:46:48,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:46:48,713 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:46:48,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:46:48,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:46:48,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:46:48,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:46:48,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:46:48,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:46:48,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:46:48,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:46:48,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:46:48,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:46:48,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:46:48,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:46:48,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:46:48,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:46:48,723 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:46:48,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:46:48,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:46:48,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:48,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:46:48,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:46:48,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:46:48,724 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:46:49,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:46:49,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:46:49,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:46:49,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:46:49,187 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:46:49,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn2f.c [2021-02-23 18:46:49,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1ab4a19/3a5d01c3042b4d178afe5dfc08060383/FLAG695cd9ff7 [2021-02-23 18:46:49,909 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:46:49,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn2f.c [2021-02-23 18:46:49,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1ab4a19/3a5d01c3042b4d178afe5dfc08060383/FLAG695cd9ff7 [2021-02-23 18:46:50,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1ab4a19/3a5d01c3042b4d178afe5dfc08060383 [2021-02-23 18:46:50,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:46:50,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:46:50,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:50,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:46:50,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:46:50,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:50" (1/1) ... [2021-02-23 18:46:50,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6164d2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50, skipping insertion in model container [2021-02-23 18:46:50,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:50" (1/1) ... [2021-02-23 18:46:50,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:46:50,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:46:50,508 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/eqn2f.c[588,601] [2021-02-23 18:46:50,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:50,538 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:46:50,552 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/eqn2f.c[588,601] [2021-02-23 18:46:50,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:50,578 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:46:50,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50 WrapperNode [2021-02-23 18:46:50,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:50,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:46:50,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:46:50,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:46:50,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50" (1/1) ... [2021-02-23 18:46:50,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50" (1/1) ... [2021-02-23 18:46:50,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50" (1/1) ... [2021-02-23 18:46:50,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50" (1/1) ... [2021-02-23 18:46:50,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50" (1/1) ... [2021-02-23 18:46:50,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50" (1/1) ... [2021-02-23 18:46:50,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50" (1/1) ... [2021-02-23 18:46:50,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:46:50,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:46:50,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:46:50,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:46:50,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:46:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:46:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:46:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:46:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:46:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:46:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:46:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:46:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:46:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:46:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:46:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:46:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:46:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:46:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:46:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:46:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:46:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:46:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:46:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:46:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:46:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:46:51,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:46:51,089 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:46:51,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:51 BoogieIcfgContainer [2021-02-23 18:46:51,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:46:51,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:46:51,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:46:51,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:46:51,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:46:50" (1/3) ... [2021-02-23 18:46:51,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8bb916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:51, skipping insertion in model container [2021-02-23 18:46:51,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:50" (2/3) ... [2021-02-23 18:46:51,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8bb916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:51, skipping insertion in model container [2021-02-23 18:46:51,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:51" (3/3) ... [2021-02-23 18:46:51,102 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2f.c [2021-02-23 18:46:51,110 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:46:51,117 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:46:51,141 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:46:51,194 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:46:51,195 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:46:51,195 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:46:51,195 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:46:51,195 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:46:51,195 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:46:51,195 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:46:51,195 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:46:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2021-02-23 18:46:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:46:51,265 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:51,266 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] [2021-02-23 18:46:51,266 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:51,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:51,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1792706489, now seen corresponding path program 1 times [2021-02-23 18:46:51,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:51,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295607561] [2021-02-23 18:46:51,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:51,366 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:51,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:51,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:51,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:51,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:51,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:51,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:51,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:51,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:51,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:51,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:51,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295607561] [2021-02-23 18:46:51,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:51,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:46:51,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414319338] [2021-02-23 18:46:51,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:46:51,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:51,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:46:51,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:51,664 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 3 states. [2021-02-23 18:46:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:51,945 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2021-02-23 18:46:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:46:51,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2021-02-23 18:46:51,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:51,961 INFO L225 Difference]: With dead ends: 115 [2021-02-23 18:46:51,961 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 18:46:51,969 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 [2021-02-23 18:46:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 18:46:52,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-23 18:46:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 18:46:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-02-23 18:46:52,054 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 40 [2021-02-23 18:46:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:52,056 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-02-23 18:46:52,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:46:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-02-23 18:46:52,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:46:52,058 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:52,059 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] [2021-02-23 18:46:52,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:46:52,059 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:52,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1320562932, now seen corresponding path program 1 times [2021-02-23 18:46:52,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:52,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963834168] [2021-02-23 18:46:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:52,077 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:52,148 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-23 18:46:52,148 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:46:52,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:46:52,177 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-23 18:46:52,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:46:52 BoogieIcfgContainer [2021-02-23 18:46:52,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:46:52,183 INFO L168 Benchmark]: Toolchain (without parser) took 1951.30 ms. Allocated memory is still 164.6 MB. Free memory was 139.8 MB in the beginning and 93.9 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:52,185 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 164.6 MB. Free memory is still 138.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:46:52,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.55 ms. Allocated memory is still 164.6 MB. Free memory was 138.8 MB in the beginning and 128.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:52,189 INFO L168 Benchmark]: Boogie Preprocessor took 44.45 ms. Allocated memory is still 164.6 MB. Free memory was 128.8 MB in the beginning and 127.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:52,192 INFO L168 Benchmark]: RCFGBuilder took 465.86 ms. Allocated memory is still 164.6 MB. Free memory was 127.0 MB in the beginning and 141.6 MB in the end (delta: -14.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:52,193 INFO L168 Benchmark]: TraceAbstraction took 1085.07 ms. Allocated memory is still 164.6 MB. Free memory was 141.1 MB in the beginning and 93.9 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:52,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 164.6 MB. Free memory is still 138.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.55 ms. Allocated memory is still 164.6 MB. Free memory was 138.8 MB in the beginning and 128.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.45 ms. Allocated memory is still 164.6 MB. Free memory was 128.8 MB in the beginning and 127.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 465.86 ms. Allocated memory is still 164.6 MB. Free memory was 127.0 MB in the beginning and 141.6 MB in the end (delta: -14.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1085.07 ms. Allocated memory is still 164.6 MB. Free memory was 141.1 MB in the beginning and 93.9 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 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 *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 8 [L32] b[0] = 1 [L34] i=1 [L34] COND FALSE !(i