/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/modpf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:47:22,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:47:22,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:47:22,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:47:22,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:47:22,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:47:22,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:47:22,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:47:22,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:47:22,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:47:22,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:47:22,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:47:22,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:47:22,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:47:22,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:47:22,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:47:22,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:47:22,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:47:22,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:47:22,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:47:22,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:47:22,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:47:22,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:47:22,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:47:22,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:47:22,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:47:22,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:47:22,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:47:22,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:47:22,851 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:47:22,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:47:22,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:47:22,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:47:22,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:47:22,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:47:22,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:47:22,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:47:22,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:47:22,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:47:22,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:47:22,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:47:22,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:47:22,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:47:22,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:47:22,855 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:47:22,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:47:22,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:47:22,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:47:22,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:47:22,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:47:22,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:47:22,857 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:47:23,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:47:23,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:47:23,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:47:23,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:47:23,188 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:47:23,189 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modpf.c [2020-07-18 00:47:23,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69f6a536/3d10abfeba9e4812ac95d1041dd5f5a8/FLAG0373a32bf [2020-07-18 00:47:23,729 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:47:23,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modpf.c [2020-07-18 00:47:23,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69f6a536/3d10abfeba9e4812ac95d1041dd5f5a8/FLAG0373a32bf [2020-07-18 00:47:24,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69f6a536/3d10abfeba9e4812ac95d1041dd5f5a8 [2020-07-18 00:47:24,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:47:24,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:47:24,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:24,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:47:24,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:47:24,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:24" (1/1) ... [2020-07-18 00:47:24,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@723da32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24, skipping insertion in model container [2020-07-18 00:47:24,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:24" (1/1) ... [2020-07-18 00:47:24,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:47:24,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:47:24,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:24,419 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:47:24,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:24,467 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:47:24,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24 WrapperNode [2020-07-18 00:47:24,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:24,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:47:24,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:47:24,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:47:24,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24" (1/1) ... [2020-07-18 00:47:24,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24" (1/1) ... [2020-07-18 00:47:24,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24" (1/1) ... [2020-07-18 00:47:24,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24" (1/1) ... [2020-07-18 00:47:24,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24" (1/1) ... [2020-07-18 00:47:24,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24" (1/1) ... [2020-07-18 00:47:24,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24" (1/1) ... [2020-07-18 00:47:24,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:47:24,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:47:24,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:47:24,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:47:24,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24" (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 [2020-07-18 00:47:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:47:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:47:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:47:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:47:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:47:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:47:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:47:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:47:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:47:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:47:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 00:47:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:47:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 00:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 00:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:47:25,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:47:25,122 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-18 00:47:25,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:25 BoogieIcfgContainer [2020-07-18 00:47:25,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:47:25,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:47:25,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:47:25,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:47:25,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:47:24" (1/3) ... [2020-07-18 00:47:25,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7761d074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:25, skipping insertion in model container [2020-07-18 00:47:25,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:24" (2/3) ... [2020-07-18 00:47:25,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7761d074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:25, skipping insertion in model container [2020-07-18 00:47:25,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:25" (3/3) ... [2020-07-18 00:47:25,144 INFO L109 eAbstractionObserver]: Analyzing ICFG modpf.c [2020-07-18 00:47:25,155 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:47:25,163 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:47:25,177 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:47:25,199 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:47:25,199 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:47:25,200 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:47:25,200 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:47:25,200 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:47:25,200 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:47:25,201 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:47:25,201 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:47:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-07-18 00:47:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-18 00:47:25,226 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:25,227 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] [2020-07-18 00:47:25,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:25,232 INFO L82 PathProgramCache]: Analyzing trace with hash 864246722, now seen corresponding path program 1 times [2020-07-18 00:47:25,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:25,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097508140] [2020-07-18 00:47:25,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:25,477 INFO L280 TraceCheckUtils]: 0: Hoare triple {76#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {64#true} is VALID [2020-07-18 00:47:25,478 INFO L280 TraceCheckUtils]: 1: Hoare triple {64#true} #valid := #valid[0 := 0]; {64#true} is VALID [2020-07-18 00:47:25,479 INFO L280 TraceCheckUtils]: 2: Hoare triple {64#true} assume 0 < #StackHeapBarrier; {64#true} is VALID [2020-07-18 00:47:25,479 INFO L280 TraceCheckUtils]: 3: Hoare triple {64#true} ~N~0 := 0; {64#true} is VALID [2020-07-18 00:47:25,480 INFO L280 TraceCheckUtils]: 4: Hoare triple {64#true} assume true; {64#true} is VALID [2020-07-18 00:47:25,480 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {64#true} {64#true} #108#return; {64#true} is VALID [2020-07-18 00:47:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:25,492 INFO L280 TraceCheckUtils]: 0: Hoare triple {64#true} ~cond := #in~cond; {64#true} is VALID [2020-07-18 00:47:25,493 INFO L280 TraceCheckUtils]: 1: Hoare triple {64#true} assume !(0 == ~cond); {64#true} is VALID [2020-07-18 00:47:25,493 INFO L280 TraceCheckUtils]: 2: Hoare triple {64#true} assume true; {64#true} is VALID [2020-07-18 00:47:25,494 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {64#true} {64#true} #104#return; {64#true} is VALID [2020-07-18 00:47:25,496 INFO L263 TraceCheckUtils]: 0: Hoare triple {64#true} call ULTIMATE.init(); {76#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:25,497 INFO L280 TraceCheckUtils]: 1: Hoare triple {76#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {64#true} is VALID [2020-07-18 00:47:25,497 INFO L280 TraceCheckUtils]: 2: Hoare triple {64#true} #valid := #valid[0 := 0]; {64#true} is VALID [2020-07-18 00:47:25,498 INFO L280 TraceCheckUtils]: 3: Hoare triple {64#true} assume 0 < #StackHeapBarrier; {64#true} is VALID [2020-07-18 00:47:25,498 INFO L280 TraceCheckUtils]: 4: Hoare triple {64#true} ~N~0 := 0; {64#true} is VALID [2020-07-18 00:47:25,499 INFO L280 TraceCheckUtils]: 5: Hoare triple {64#true} assume true; {64#true} is VALID [2020-07-18 00:47:25,499 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {64#true} {64#true} #108#return; {64#true} is VALID [2020-07-18 00:47:25,499 INFO L263 TraceCheckUtils]: 7: Hoare triple {64#true} call #t~ret8 := main(); {64#true} is VALID [2020-07-18 00:47:25,500 INFO L280 TraceCheckUtils]: 8: Hoare triple {64#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {64#true} is VALID [2020-07-18 00:47:25,500 INFO L280 TraceCheckUtils]: 9: Hoare triple {64#true} ~N~0 := #t~nondet0; {64#true} is VALID [2020-07-18 00:47:25,501 INFO L280 TraceCheckUtils]: 10: Hoare triple {64#true} havoc #t~nondet0; {64#true} is VALID [2020-07-18 00:47:25,501 INFO L280 TraceCheckUtils]: 11: Hoare triple {64#true} assume !(~N~0 <= 0); {64#true} is VALID [2020-07-18 00:47:25,502 INFO L263 TraceCheckUtils]: 12: Hoare triple {64#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {64#true} is VALID [2020-07-18 00:47:25,502 INFO L280 TraceCheckUtils]: 13: Hoare triple {64#true} ~cond := #in~cond; {64#true} is VALID [2020-07-18 00:47:25,502 INFO L280 TraceCheckUtils]: 14: Hoare triple {64#true} assume !(0 == ~cond); {64#true} is VALID [2020-07-18 00:47:25,503 INFO L280 TraceCheckUtils]: 15: Hoare triple {64#true} assume true; {64#true} is VALID [2020-07-18 00:47:25,503 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {64#true} {64#true} #104#return; {64#true} is VALID [2020-07-18 00:47:25,504 INFO L280 TraceCheckUtils]: 17: Hoare triple {64#true} havoc ~i~0; {64#true} is VALID [2020-07-18 00:47:25,504 INFO L280 TraceCheckUtils]: 18: Hoare triple {64#true} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(4); srcloc: L26 {64#true} is VALID [2020-07-18 00:47:25,505 INFO L280 TraceCheckUtils]: 19: Hoare triple {64#true} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0); srcloc: L26-1 {64#true} is VALID [2020-07-18 00:47:25,505 INFO L280 TraceCheckUtils]: 20: Hoare triple {64#true} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {64#true} is VALID [2020-07-18 00:47:25,506 INFO L280 TraceCheckUtils]: 21: Hoare triple {64#true} SUMMARY for call write~int(0, ~#sum~0.base, ~#sum~0.offset, 4); srcloc: L29 {64#true} is VALID [2020-07-18 00:47:25,506 INFO L280 TraceCheckUtils]: 22: Hoare triple {64#true} ~i~0 := 0; {64#true} is VALID [2020-07-18 00:47:25,507 INFO L280 TraceCheckUtils]: 23: Hoare triple {64#true} assume !true; {65#false} is VALID [2020-07-18 00:47:25,508 INFO L280 TraceCheckUtils]: 24: Hoare triple {65#false} ~i~0 := 0; {65#false} is VALID [2020-07-18 00:47:25,508 INFO L280 TraceCheckUtils]: 25: Hoare triple {65#false} assume !(~i~0 < ~N~0); {65#false} is VALID [2020-07-18 00:47:25,508 INFO L280 TraceCheckUtils]: 26: Hoare triple {65#false} ~i~0 := 0; {65#false} is VALID [2020-07-18 00:47:25,509 INFO L280 TraceCheckUtils]: 27: Hoare triple {65#false} assume !!(~i~0 < ~N~0); {65#false} is VALID [2020-07-18 00:47:25,509 INFO L280 TraceCheckUtils]: 28: Hoare triple {65#false} SUMMARY for call #t~mem7 := read~int(~a~0.base, ~a~0.offset + 4 * ~i~0, 4); srcloc: L42 {65#false} is VALID [2020-07-18 00:47:25,510 INFO L263 TraceCheckUtils]: 29: Hoare triple {65#false} call __VERIFIER_assert((if 1 == (if #t~mem7 < 0 && 0 != #t~mem7 % ~N~0 then (if ~N~0 < 0 then #t~mem7 % ~N~0 + ~N~0 else #t~mem7 % ~N~0 - ~N~0) else #t~mem7 % ~N~0) then 1 else 0)); {65#false} is VALID [2020-07-18 00:47:25,510 INFO L280 TraceCheckUtils]: 30: Hoare triple {65#false} ~cond := #in~cond; {65#false} is VALID [2020-07-18 00:47:25,511 INFO L280 TraceCheckUtils]: 31: Hoare triple {65#false} assume 0 == ~cond; {65#false} is VALID [2020-07-18 00:47:25,511 INFO L280 TraceCheckUtils]: 32: Hoare triple {65#false} assume !false; {65#false} is VALID [2020-07-18 00:47:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:47:25,519 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:25,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097508140] [2020-07-18 00:47:25,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:25,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 00:47:25,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671199579] [2020-07-18 00:47:25,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-18 00:47:25,534 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:25,538 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 00:47:25,598 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:25,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 00:47:25,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:25,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 00:47:25,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:25,611 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2020-07-18 00:47:25,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:25,975 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2020-07-18 00:47:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 00:47:25,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-18 00:47:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2020-07-18 00:47:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2020-07-18 00:47:25,998 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 120 transitions. [2020-07-18 00:47:26,159 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 120 edges. 120 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:26,175 INFO L225 Difference]: With dead ends: 105 [2020-07-18 00:47:26,175 INFO L226 Difference]: Without dead ends: 52 [2020-07-18 00:47:26,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-18 00:47:26,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-07-18 00:47:26,279 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:26,280 INFO L82 GeneralOperation]: Start isEquivalent. First operand 52 states. Second operand 52 states. [2020-07-18 00:47:26,280 INFO L74 IsIncluded]: Start isIncluded. First operand 52 states. Second operand 52 states. [2020-07-18 00:47:26,281 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 52 states. [2020-07-18 00:47:26,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:26,288 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-07-18 00:47:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-07-18 00:47:26,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:26,289 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:26,289 INFO L74 IsIncluded]: Start isIncluded. First operand 52 states. Second operand 52 states. [2020-07-18 00:47:26,290 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 52 states. [2020-07-18 00:47:26,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:26,295 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-07-18 00:47:26,296 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-07-18 00:47:26,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:26,297 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:26,297 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:26,297 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-18 00:47:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-07-18 00:47:26,303 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 33 [2020-07-18 00:47:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:26,303 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-07-18 00:47:26,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 00:47:26,304 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 52 states and 54 transitions. [2020-07-18 00:47:26,375 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 54 edges. 54 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:26,375 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-07-18 00:47:26,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-18 00:47:26,376 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:26,377 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] [2020-07-18 00:47:26,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:47:26,377 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:26,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1269072019, now seen corresponding path program 1 times [2020-07-18 00:47:26,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:26,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682645302] [2020-07-18 00:47:26,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:26,532 INFO L280 TraceCheckUtils]: 0: Hoare triple {511#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {497#true} is VALID [2020-07-18 00:47:26,532 INFO L280 TraceCheckUtils]: 1: Hoare triple {497#true} #valid := #valid[0 := 0]; {497#true} is VALID [2020-07-18 00:47:26,532 INFO L280 TraceCheckUtils]: 2: Hoare triple {497#true} assume 0 < #StackHeapBarrier; {497#true} is VALID [2020-07-18 00:47:26,533 INFO L280 TraceCheckUtils]: 3: Hoare triple {497#true} ~N~0 := 0; {497#true} is VALID [2020-07-18 00:47:26,533 INFO L280 TraceCheckUtils]: 4: Hoare triple {497#true} assume true; {497#true} is VALID [2020-07-18 00:47:26,534 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {497#true} {497#true} #108#return; {497#true} is VALID [2020-07-18 00:47:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:26,552 INFO L280 TraceCheckUtils]: 0: Hoare triple {497#true} ~cond := #in~cond; {497#true} is VALID [2020-07-18 00:47:26,553 INFO L280 TraceCheckUtils]: 1: Hoare triple {497#true} assume !(0 == ~cond); {497#true} is VALID [2020-07-18 00:47:26,553 INFO L280 TraceCheckUtils]: 2: Hoare triple {497#true} assume true; {497#true} is VALID [2020-07-18 00:47:26,558 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {497#true} {505#(<= 1 ~N~0)} #104#return; {505#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:26,559 INFO L263 TraceCheckUtils]: 0: Hoare triple {497#true} call ULTIMATE.init(); {511#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:26,560 INFO L280 TraceCheckUtils]: 1: Hoare triple {511#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {497#true} is VALID [2020-07-18 00:47:26,560 INFO L280 TraceCheckUtils]: 2: Hoare triple {497#true} #valid := #valid[0 := 0]; {497#true} is VALID [2020-07-18 00:47:26,560 INFO L280 TraceCheckUtils]: 3: Hoare triple {497#true} assume 0 < #StackHeapBarrier; {497#true} is VALID [2020-07-18 00:47:26,561 INFO L280 TraceCheckUtils]: 4: Hoare triple {497#true} ~N~0 := 0; {497#true} is VALID [2020-07-18 00:47:26,561 INFO L280 TraceCheckUtils]: 5: Hoare triple {497#true} assume true; {497#true} is VALID [2020-07-18 00:47:26,561 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {497#true} {497#true} #108#return; {497#true} is VALID [2020-07-18 00:47:26,562 INFO L263 TraceCheckUtils]: 7: Hoare triple {497#true} call #t~ret8 := main(); {497#true} is VALID [2020-07-18 00:47:26,562 INFO L280 TraceCheckUtils]: 8: Hoare triple {497#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {497#true} is VALID [2020-07-18 00:47:26,562 INFO L280 TraceCheckUtils]: 9: Hoare triple {497#true} ~N~0 := #t~nondet0; {497#true} is VALID [2020-07-18 00:47:26,563 INFO L280 TraceCheckUtils]: 10: Hoare triple {497#true} havoc #t~nondet0; {497#true} is VALID [2020-07-18 00:47:26,566 INFO L280 TraceCheckUtils]: 11: Hoare triple {497#true} assume !(~N~0 <= 0); {505#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:26,566 INFO L263 TraceCheckUtils]: 12: Hoare triple {505#(<= 1 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {497#true} is VALID [2020-07-18 00:47:26,566 INFO L280 TraceCheckUtils]: 13: Hoare triple {497#true} ~cond := #in~cond; {497#true} is VALID [2020-07-18 00:47:26,567 INFO L280 TraceCheckUtils]: 14: Hoare triple {497#true} assume !(0 == ~cond); {497#true} is VALID [2020-07-18 00:47:26,567 INFO L280 TraceCheckUtils]: 15: Hoare triple {497#true} assume true; {497#true} is VALID [2020-07-18 00:47:26,568 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {497#true} {505#(<= 1 ~N~0)} #104#return; {505#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:26,569 INFO L280 TraceCheckUtils]: 17: Hoare triple {505#(<= 1 ~N~0)} havoc ~i~0; {505#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:26,570 INFO L280 TraceCheckUtils]: 18: Hoare triple {505#(<= 1 ~N~0)} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(4); srcloc: L26 {505#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:26,571 INFO L280 TraceCheckUtils]: 19: Hoare triple {505#(<= 1 ~N~0)} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0); srcloc: L26-1 {505#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:26,572 INFO L280 TraceCheckUtils]: 20: Hoare triple {505#(<= 1 ~N~0)} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {505#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:26,573 INFO L280 TraceCheckUtils]: 21: Hoare triple {505#(<= 1 ~N~0)} SUMMARY for call write~int(0, ~#sum~0.base, ~#sum~0.offset, 4); srcloc: L29 {505#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:26,575 INFO L280 TraceCheckUtils]: 22: Hoare triple {505#(<= 1 ~N~0)} ~i~0 := 0; {510#(and (= 0 main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-18 00:47:26,576 INFO L280 TraceCheckUtils]: 23: Hoare triple {510#(and (= 0 main_~i~0) (<= 1 ~N~0))} assume !(~i~0 < ~N~0); {498#false} is VALID [2020-07-18 00:47:26,576 INFO L280 TraceCheckUtils]: 24: Hoare triple {498#false} ~i~0 := 0; {498#false} is VALID [2020-07-18 00:47:26,576 INFO L280 TraceCheckUtils]: 25: Hoare triple {498#false} assume !(~i~0 < ~N~0); {498#false} is VALID [2020-07-18 00:47:26,577 INFO L280 TraceCheckUtils]: 26: Hoare triple {498#false} ~i~0 := 0; {498#false} is VALID [2020-07-18 00:47:26,577 INFO L280 TraceCheckUtils]: 27: Hoare triple {498#false} assume !!(~i~0 < ~N~0); {498#false} is VALID [2020-07-18 00:47:26,578 INFO L280 TraceCheckUtils]: 28: Hoare triple {498#false} SUMMARY for call #t~mem7 := read~int(~a~0.base, ~a~0.offset + 4 * ~i~0, 4); srcloc: L42 {498#false} is VALID [2020-07-18 00:47:26,578 INFO L263 TraceCheckUtils]: 29: Hoare triple {498#false} call __VERIFIER_assert((if 1 == (if #t~mem7 < 0 && 0 != #t~mem7 % ~N~0 then (if ~N~0 < 0 then #t~mem7 % ~N~0 + ~N~0 else #t~mem7 % ~N~0 - ~N~0) else #t~mem7 % ~N~0) then 1 else 0)); {498#false} is VALID [2020-07-18 00:47:26,578 INFO L280 TraceCheckUtils]: 30: Hoare triple {498#false} ~cond := #in~cond; {498#false} is VALID [2020-07-18 00:47:26,578 INFO L280 TraceCheckUtils]: 31: Hoare triple {498#false} assume 0 == ~cond; {498#false} is VALID [2020-07-18 00:47:26,579 INFO L280 TraceCheckUtils]: 32: Hoare triple {498#false} assume !false; {498#false} is VALID [2020-07-18 00:47:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:47:26,592 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:26,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682645302] [2020-07-18 00:47:26,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:26,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 00:47:26,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621858746] [2020-07-18 00:47:26,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-18 00:47:26,596 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:26,596 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 00:47:26,657 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:26,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 00:47:26,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 00:47:26,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-18 00:47:26,659 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 5 states. [2020-07-18 00:47:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:27,283 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2020-07-18 00:47:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 00:47:27,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-18 00:47:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2020-07-18 00:47:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2020-07-18 00:47:27,293 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 98 transitions. [2020-07-18 00:47:27,423 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 98 edges. 98 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:27,427 INFO L225 Difference]: With dead ends: 92 [2020-07-18 00:47:27,427 INFO L226 Difference]: Without dead ends: 70 [2020-07-18 00:47:27,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:47:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-18 00:47:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-07-18 00:47:27,538 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:27,539 INFO L82 GeneralOperation]: Start isEquivalent. First operand 70 states. Second operand 54 states. [2020-07-18 00:47:27,539 INFO L74 IsIncluded]: Start isIncluded. First operand 70 states. Second operand 54 states. [2020-07-18 00:47:27,539 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 54 states. [2020-07-18 00:47:27,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:27,546 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-18 00:47:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-07-18 00:47:27,547 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:27,547 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:27,547 INFO L74 IsIncluded]: Start isIncluded. First operand 54 states. Second operand 70 states. [2020-07-18 00:47:27,547 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 70 states. [2020-07-18 00:47:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:27,553 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-18 00:47:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-07-18 00:47:27,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:27,554 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:27,554 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:27,554 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-18 00:47:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-07-18 00:47:27,558 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 33 [2020-07-18 00:47:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:27,558 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-07-18 00:47:27,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 00:47:27,559 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 54 states and 56 transitions. [2020-07-18 00:47:27,648 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 56 edges. 56 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-07-18 00:47:27,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-18 00:47:27,651 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:27,651 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] [2020-07-18 00:47:27,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:47:27,652 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:27,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:27,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1661969402, now seen corresponding path program 1 times [2020-07-18 00:47:27,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:27,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120924065] [2020-07-18 00:47:27,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:27,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:47:27,695 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:47:27,702 INFO L168 Benchmark]: Toolchain (without parser) took 3555.07 ms. Allocated memory was 135.8 MB in the beginning and 257.9 MB in the end (delta: 122.2 MB). Free memory was 98.6 MB in the beginning and 150.4 MB in the end (delta: -51.8 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:27,703 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 135.8 MB. Free memory was 117.5 MB in the beginning and 117.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:47:27,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.42 ms. Allocated memory is still 135.8 MB. Free memory was 98.2 MB in the beginning and 87.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:27,705 INFO L168 Benchmark]: Boogie Preprocessor took 132.08 ms. Allocated memory was 135.8 MB in the beginning and 198.7 MB in the end (delta: 62.9 MB). Free memory was 87.3 MB in the beginning and 176.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:27,706 INFO L168 Benchmark]: RCFGBuilder took 534.50 ms. Allocated memory is still 198.7 MB. Free memory was 176.2 MB in the beginning and 147.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:27,707 INFO L168 Benchmark]: TraceAbstraction took 2562.46 ms. Allocated memory was 198.7 MB in the beginning and 257.9 MB in the end (delta: 59.2 MB). Free memory was 147.2 MB in the beginning and 150.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:27,711 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 135.8 MB. Free memory was 117.5 MB in the beginning and 117.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.42 ms. Allocated memory is still 135.8 MB. Free memory was 98.2 MB in the beginning and 87.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.08 ms. Allocated memory was 135.8 MB in the beginning and 198.7 MB in the end (delta: 62.9 MB). Free memory was 87.3 MB in the beginning and 176.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 534.50 ms. Allocated memory is still 198.7 MB. Free memory was 176.2 MB in the beginning and 147.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2562.46 ms. Allocated memory was 198.7 MB in the beginning and 257.9 MB in the end (delta: 59.2 MB). Free memory was 147.2 MB in the beginning and 150.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...